Fort Collins police and medical personnel are responding to an explosion on the Colorado State University campus Tuesday afternoon.

Two students were injured around 3:30 p.m. when a student in a chemistry lab mixed water with an unknown chemical while cleaning a container, police said. An explosion occurred.

The student who caused the explosion was taken to the hospital for injuries, including cuts to his face from glass, police said.

Another student was treated for cuts to the hand.

There was no damage to the building , police said.

This story will be updated as more information becomes available.

Ryan Parker: 303-954-2409, rparker@denverpost.com or twitter.com/ryanparkerdp