SANTA FE, Texas — Law enforcement officers are responding to a high school near Houston after an active shooter was reported on campus.

The Santa Fe school district issued an alert Friday morning saying Santa Fe High School has been placed on lockdown.

Galveston County sheriff's Maj. Douglas Hudson says units are responding to reports of shots fired. He had no immediate details on whether anyone has been hurt.

Santa Fe is a city of about 13,000 residents, located 30 miles (48 kilometers) southeast of Houston.

One student told Houston television station KTRK in a telephone interview that a gunman came into her first-period art class and started shooting. The student says she saw one girl with blood on her leg as the class evacuated the room.

Authorities have not yet confirmed that report.