Story highlights The victims were testing the rocket in a parking lot

They were transported to a local hospital with undisclosed injuries

(CNN) Four people were injured when an experimental rocket exploded at the University of Idaho on Thursday night, school officials said.

The victims were testing the rocket in a parking lot next to the school's steam plant, when it apparently malfunctioned, said Jodi Walker, a campus spokeswoman.

They were transported to a local hospital with undisclosed injuries. They "were alert and communicating" with the university's staff, according to a statement released by the university.

There is no danger to the campus at this time, Walker said.