Internationally-acclaimed reporter Anna Politkovskaya was shot dead in her Moscow apartment building in 2006.
A strident critic of the Kremlin, she had received death threats following her outspoken reports documenting torture, mass executions and kidnapping by the military during the conflict in Chechnya.
She had also written about violence in the army, corruption, and police brutality in Russia. Colleagues believed someone had ordered her death to silence her.
In 2009, three men were cleared by a court over the killing but the acquittals were later overruled and the case sent back to prosecutors.
Veronica Guerin, crime reporter for the Sunday Independent who had carried out investigations into senior members of the criminal underworld, was shot dead in her car on the outskirts of Dublin by a motorcycle pillion passenger in 1996.
Her murder provoked outrage and the story was turned into a Hollywood film starring Cate Blanchett.
The killing was alleged to have been ordered by a drugs baron – but he has never been charged over the death.
In 2007, two women journalists were killed in Afghanistan.
Reporter Zakia Zaki was shot seven times as she slept with her 20-month-old son. Her death came six days after Shakiba Sanga Amaj, a television newsreader, was killed.
Last year, two women journalists were found murdered in a Mexico City park.
The bodies of Ana Marcela Yarce Viveros, the founder of a political magazine, and freelance reporter Rocio Gonzalez Trapaga were discovered by joggers.
Their killings followed a pattern of murders by organised crime gangs and drug cartels.
In 2009, radio journalist Uma Singh was hacked to death by a gang of men in Nepal.
Singh had broadcast and written about women’s rights and the caste system, as well as political issues.
Dickey Chapelle, a US photojournalist who had covered the Second World War in Iwo Jima and Okinawa, was killed by a landmine in Vietnam in 1965.
