The 41-year-old biker died of an apparently self-inflicted gunshot wound, according to TMZ Sports, though police are still looking into his death.
In addition to his work on MTV, Mirra was the subject of a series of video games, including Playstation’s Dave Mirra Freestyle BMX. He also made special appearances on Punk’d — in which Ashton Kutcher tricked him into thinking he was in trouble with the IRS — and The Late Show with David Letterman.
MTV mourned the loss of the former Challenge host on Twitter:
Mirra is survived by his wife, Lauren, and two children.