People have been killed at a Texas high school where police have arrested an active gunman.

Santa Fe High School is on lockdown after the shooting, where the number who have died is unclear.

Police have also reported that people have been injured at the school roughly 30 miles south east of Houston.

The school's assistant principle says the gunman has been "arrested and secured" and the the school district in Santa Fe, about 30 miles (48 km) southeast of Houston, said the situation was "active, but has been contained."

One student told Houston television station KTRK over the phone that a gunman came into her art class and started shooting.


Texas school shooting: From the air

The student said she saw a girl with blood on her leg as the class evacuated.

Parent Richard Allen told the station he arrived at the school soon after the shooting and reported seeing a number of victims being taken away in ambulances.

"My son said someone went into the art room and started shooting a lot of the kids," he said.

Image: The school is on lockdown

Authorities have not yet confirmed the reports.

The school district near Houston issued an alert saying the school was on lockdown.

Footage outside the school showed police escorting lines of students out of the building and searching them for weapons.

Santa Fe is a city of about 13,000 residents, 30 miles southeast of Houston.

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