GATESVILLE, Texas (AP) — Emergency crews are converging on a Central Texas hospital where a large explosion has been reported.

The incident was reported about 2:30 p.m. Tuesday at a construction site at the Coryell Memorial Healthcare System hospital in Gatesville, 36 miles (58 kilometers) west of Waco, Texas.

Hospital spokeswoman Carly Latham told KWTX-TV of Waco that there were injuries, but she didn't have any totals or information on severity. She said she hadn't heard of any deaths.

Witnesses say the explosion happened when a generator exploded in an addition to the hospital that was under construction.

A spokesman for the Texas-New Mexico Power Company says the explosion knocked out power for a large portion of the city.

Patients were being evacuated from the hospital and from two nearby nursing homes.