Lightning strikes at Pocono Raceway after a rain-shortened NASCAR race Sunday killed one fan and injured nine others, one critically, racetrack officials said.

Multiple lightning strikes occurred behind the racetrack's grandstands and outside one of the gates as fans were leaving, Pocono spokesman Bob Pleban said. It wasn't immediately clear how many of the fans were actually struck by the lightning itself or were injured by related jolts.

"Unfortunately, a member of our raceway family here, a fan, has passed away," Pocono president Brandon Igdalsky said in announcing the death. He provided no details about the victim but expressed condolences to his family.