• In this June 1, 2011, file photo provided by Jeff Bottari, Erik Roner, of Nitro Circus, talks to the media after a base jump off the MGM Grand Hotel & Casino in Las Vegas. The extreme sports and MTV star skydiving for the opening ceremony of a golf event in Northern California died when he struck a tree Monday, Sept. 28, 2015, authorities said. (Jeff Bottari via AP, File)

    Extreme sports star killed in California skydiving accident

    SAN FRANCISCO (AP) — A skier and BASE jumper who regularly appeared on an MTV show about extreme sports was killed after crashing into a tree during a skydiving stunt at a Northern California golf course, authorities said.