Authorities say a woman stabbed Denver's fire chief after jumping into his vehicle near the department's headquarters.

Police spokesman Doug Schepman says the woman jumped into Chief Eric Tade's black SUV on Tuesday afternoon and stabbed him in the hand and leg. Tade ran into fire headquarters for help.

Authorities say Tade's injuries are minor. He was hospitalized in fair condition.

The woman, whose name wasn't immediately released, was arrested on suspicion of aggravated assault. Witnesses identified her.

Schepman says police are still investigating a motive and don't know whether the chief and the woman knew each other.