Over the weekend armed counter- terrorism officers arrested four young men within 24 hours on suspicion of conspiracy to commit murder. The dramatic daytime arrests by police wearing balaclavas means there are now six terror suspects being held over the death of Drummer Lee Rigby. These include Michael Adebolajo, 28, and Michael Adebowale, 22, who remain in hospital under arrest after executing Drummer Rigby, 25, last Wednesday.

A Mail investigation into online Islamist propaganda has uncovered footage praising the killing of soldier Lee Rigby in Woolwich. Terror videos of how to use an AK-47 rifle (far right) are easy-to-access on YouTube. Radical cleric Omar Mohammed (top left) said 'Woolwich killer Adebolajo is courageous and a hero', and Mohammed Khan (bottom right) warns: 'You will be our targets' in YouTube footage. The ideological leader of Al Qaedai, Anwar Al-Awlaki (bottom left) rants: 'My ancestors killed whoever didn't want to become Muslims' in a clip.

Rebecca Rigby, (centre) the widow of Drummer Lee Rigby, made a tearful pilgrimage to the scene of his murder yesterday, the day after his fiancee Aimee West (left) made the same heartbreaking trip. Ms Rigby, the mother of the soldier’s two-year-old son Jack, laid a wreath amid hundreds of other floral tributes to her estranged husband. It is understood that Drummer Rigby (pictured on patrol in Helmand, right) had separated from his wife, and started a relationship with army colleague Aimee West.

Cliff Clarke, of Liverpool, had slightly burnt the lamb shank he had cooked for his evening meal so he opened his back door. But the smell of the food attracted two large dogs which broke through his garden fence. Merseyside Police were called when neighbours heard barking before armed officers arriving at the scene had to shoot the dog dead. Officers (pictured right) were seen removing the pet, believed to be a Staffordshire bull terrier crossed with a bull mastiff (inset, an example of the breed).

First-time mum Julie Cook was so terrified that her toddler son Alex would injure himself she bought a crash helmet online to protect the then nine-month-old tot - much to the bemusement of her husband Cornel, pictured with Julie and Alex inset, who eventually made her put the safety gear in the bin when she realised that she needed to equip her little boy to survive in the world, sharp corners and all.

This is England on the cusp of summer - although it won't feel much like it this week. After a weekend of glorious sunshine, which helped produce this wonderful view at Exbury Gardens in the New Forest, the coming days will be altogether chillier. Worse, downpours are predicted on Monday for much of Britain, with only the south and south east escaping the damp weather until Tuesday.

The thing about a cancer diagnosis is that it never finishes with you. You are never free from worry and if you're not fretting about a mole, it's a cough that seems to take a long time to go. There is endless anxiety until you eventually realise the only way it ends is if the cancer wins. I know all about that, writes LINDSAY NICHOLSON (above left). My first husband (top right) died from leukaemia, a blood cancer. Then when my eldest daughter Ellie was nine she was diagnosed with leukaemia as well. A million-to-one chance, doctors said. But not zero. Because it never is zero.

Sarah McClay, 24, was attacked by a Sumatran tiger at the park in Dalton-in-Furness, Cumbria, on Friday afternoon after she went into its enclosure. Bosses at the park say she had no reason to be in the area. Police say the enclosure had several compartments which were connected by lockable doors.

Wayne Braund (top and bottom right), 31, was snorting the drug with friends when he used his bank card to line up the white powder to say 'Braundy' for the camera, in a picture found by officers investigating a crime gang. The 10-man team operating out of Rochdale, Greater Manchester, had imported £4.5million worth of ecstasy, amphetamines, cocaine and cannabis into Britain disguised as tinned fruit and tomatoes. Other pictures showed lines of cocaine next to a rolled-up 500 note (bottom left) and bags of ecstasy (top left).

The American Institute of Architects announced the winners of the 2013 AIA/HUD Secretary Housing Award with the top prize going to a contemporary-styled home in Orca Islands, Washington State that even features a living room inside a forest. The two other top contenders also made the most of their natural surroundings in California and Colorado and both have pools that can be used year-round.

Obama thanked first responders in front of the flattened Plaza Towers Elementary School, where seven children were killed when the monstrous EF5 tornado that barreled through last Monday afternoon. He also visited with families who lost everything in the storm that destroyed 1,200 homes and damaged 12,000.

Princess was unwittingly driven around for hundreds of miles while trapped in her owner's BMW before she was discovered. It was only after the pet clawed her way through a coolant hose - triggering a warning light - that owner Julie Tansley, 40, of Nottingham, realised where she had been.

Neil Christie, 61, from Carlisle, and his wife Rosa are just one of many British couples taking advantage of the Spanish economic crisis to buy properties at a fraction of UK prices. Their four-property hamlet in rural north west Spain cost a fifth of the price of the average semi-detached house in Britain. Although all the houses need serious renovation, Mr Christie expects to have spent no more than £140,000 on the village in total when it is finished.

The Esplanade des Invalides saw protesters waving trademark pink and blue flags, while demonstrators hung a banner on the ruling Socialist Party headquarters calling for President Francois Hollande to quit. The protests, which began as a grass roots campaign strongly backed by the Roman Catholic Church, have morphed into a wider movement with opposition politicians and far-right militants airing discontent with the unpopular Hollande.

Amy Beth Cavaretta was en route to a Boca Raton, Florida hospital for the birth of her second child, but 'Sienna' just couldn't wait very long. The amazing photos that show Cavaretta using a wheelchair to steady herself outside the hospital as she gave birth were captured by photographer Emily Robinson who shared the story on her personal blog.

They were supposed to be back in time for lunch, but six crew members of a gunship over Vietnam nearly 50 years ago were tragically killed in a crash - and their families are still looking for answers this Memorial Day. Col Joseph Christiano of Rochester, N.Y.; Col Derrell B. Jeffords of Florence, South Carolina; Lt Col Dennis L. Eilers of Cedar Rapids, Iowa; Chief Master Sgt. William K. Colwell of Glen Cove, New York; Chief Master Sgt Arden K. Hassenger of Lebanon, Oregon; and Chief Master Sgt Larry C. Thornton of Idaho Falls, Idaho, were killed when their plane went down on Christmas Eve 1965. Pictured right is Sherrie Hassenger with a photo of her husband. She says she has never really gotten over the loss of her love

Climbing to twice the height of the Angel of the North, the intrepid roof walkers carefully tread on the steel panel shell of the landmark building, situated on the south bank of the River Tyne, taking in the magnificent Newcastle and Gateshead quayside under beautiful blue skies. The unique 'Roof Walk Experiences' includes a behind the scenes tour of the famous music and arts venue designed by Sir Norman Foster, and continues through weekends in June.

Holy Land USA in Connecticut was a religious attraction that shut to the public nearly 30 years ago and has been abandoned ever since. It was listed for sale in 2011 but has just had $150,000 slashed off the asking price. The property covers nearly 9,5500 square feet.

Whizz the Newfoundland hero, who is 13st and 6ft tall, can save up to a dozen people at a time on rescue missions in Clapton-in-Gordano, Somerset. The pooch (in action above) has webbed paws that help him glide through the waves in emergency situations - but a severe gash from glass forced him out of action. But a Canadian company which designs state-of-the-art wetsuits had a specially-made glove flown in to help Whizz carry on his life-saving duties.

Photographer, Dmitriy Reinshtein, 26, from Moldova in Kishinev, spent hours waiting for that one special shot as he tried to capture the beauty of the insect world. He created the photographs by positioning tiny water droplets, sticks and paper. He came up with the idea after spotting a spider sheltering from the rain.

It has long been believed that suffragette Emily Wilding Davison, pictured, valiently threw herself under King George V's horse, at the Epsom Derby in 1913, right. However, the truth about the woman the Suffragettes thought of as a 'loose cannon' is rather cloudier with her sacrifice 'nothing more than a protest that went spectacularly wrong'.

The world's tallest tower swing ride, which sends those foolhardy enough to get on-board a whopping 400 feet up in the air, was officially opened on Saturday at the Six Flags Over Texas amusement park in Arlington. The Texas SkyScreamer allows up to twenty-four riders to sit in open-air swings while spinning in a 124-foot circle at speeds up to 35 mph. At its 40 story peak - and if the riders still have their eyes open - they can see not only Arlington, but also Dallas and Fort Worth.