The Howell High School junior varsity football team was robbed during their game at Lansing Everett on Wednesday night, according to the Lansing State Journal.
Someone broke into the locker room during the second half of the game and stole bags and backpacks belonging to the players.
Several cell phones were taken, along with some jewelry.
A Lansing School District spokesperson says the locker room door was left unlocked.
Howell's school administrators are working with Lansing Police to recover the stolen items.