Patton Oswalt takes daughter Alice to The Lego Batman Movie premiere... the day after revealing his wife's cause of death

By Dailymail.com Reporter

Published: 18:56 EST, 4 February 2017 | Updated: 19:35 EST, 4 February 2017

Patton Oswalt was among the troupe of celebrities at the premiere of The Lego Batman Movie at Westwood's Regency Village Theatre in Westwood.

The doting father was enjoying a day out with his seven-year-old daughter Alice, who wore a purple mask similar to the one the movie's title character wears.

One day before, he'd issued a statement revealing the official cause of his wife Michelle McNamara's death last April.

Family time: Patton Oswalt took his daughter Alice to the premiere of The Lego Batman Movie at Westwood's Regency Village Theatre in Westwood on Saturday

The statement said he'd learned from coroner's officials that McNamara had a condition that led to artery blockages. Neither he nor she had known of it.

'We learned today the combination of drugs in Michelle's system, along with a condition we were unaware of, proved lethal,' the statement said.

Aged 46 when she died in her sleep, she'd been taking fentanyl, a synthetic opioid painkiller, in addition to Adderall and Xanax.

Getting into the spirit of things: The seven-year-old wore a purple mask resembling the one the title character of the movie wears

All smiles: The 46-year-old seemed to be enjoying the event

Michelle married the actor and comic in 2005 and had launched True Crime Diary, a website covering not only new crimes but also cold cases.

An Emmy-winning comedian with frequent TV parts, Oswalt's arguably best known role is as Remy, the rat he voiced in the Pixar film Ratatouille.

The movie he'd taken his daughter to see on Saturday will open in US movie theaters next Friday and is a spin-off of The Lego Movie, which came out in 2014.

Revealed: One day before, he'd issued a statement to the Associated Press revealing the official cause of his wife Michelle McNamara's death last April, saying ''We learned today the combination of drugs in Michelle's system, along with a condition we were unaware of, proved lethal'

Directed by first-timer Chris McKay, who'd been an animation co-director on The Lego Movie, The Lego Batman Movie stars Will Arnett as the Caped Crusader.

Zach Galifianakis features as the iconic villain The Joker, while Michael Cera plays Dick Grayson, also known as Batman's sidekick Robin.

The two of them posed at the premiere with Arnett, as well as with Chris Hardwick, who revealed this week on his chat show @midnight that he's done 'a couple voices in this movie.'

Leading man: Directed by first-timer Chris McKay, who'd been an animation co-director on The Lego Movie, The Lego Batman Movie stars Will Arnett as the Caped Crusader

Quartet: The Arrested Development actor (second from left) posed at the premiere with his fellow voice-actors from the film, (from left) Michael Cera, who plays Robin, Zach Galifianakis, who plays The Joker, and Chris Hardwick, who in his own words has done 'a couple voices in this movie'

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