Published: Sep 17, 2010 3:42 PM EDT
Updated: Sep 17, 2010 12:42 PM EDT

TAMPA, Fla. (AP) - A Hillsborough County Sheriff's deputy is in serious condition in a hospital after a crane collided with her cruiser on a busy Tampa intersection, injuring seven others.

The sheriff's office reports that 51-year-old Deputy Deborah Walker is being treated at St. Joseph's Hospital. The other victims suffered non life-threatening injuries. They have not been identified.

Authorities say a crane's air brakes apparently failed Thursday morning, striking the deputy's cruiser. The cruiser was t-boned, pushing it into oncoming traffic and causing a chain reaction involving two other cars and a Hart Line bus.

Tow trucks had to lift the crane off the top of the cruiser and the deputy was extracted from the car.