CYPRESS, TEXAS —A male student from Lone Star College in Texas has been arrested in connection with a mass stabbing attack on campus that injured 14 people, two critically.

The student, whose name was not released, is believed to be about 21 years old and is suspected of acting alone in what one official described as a “building-to-building” attack at the community college.

The campus was put on lockdown and then closed for the day after the late morning attack. Twelve of the victims were hospitalized with laceration injuries, including four who were taken to the hospital by helicopter. Two declined treatment at the scene.

Officials have not identified what type of weapon was used, whether it was “a knife or other type of instrument,” Harris County Sheriff Adrian Garcia said during a televised news conference.

The first calls to police, at 11:12 a.m. Central time, reported a “man on the loose stabbing people,” Garcia said.

Officials backed off early reports that there may have been a second suspect at the Lone Star College CyFair campus, where as many as 7,000 students attend each day. Steven Maida, 21, who is studying petroleum engineering at Lone Star, said he was on his way to his car from the bookstore when he heard a girl screaming, “My friend got stabbed in the face.”

Then he saw another girl who had been stabbed. He went into a nearby building and saw another young man who had been stabbed in the head.

“He saw us coming and he ran to a building and we almost lost him,” he said.

Student Jonathan Clayton, 20, was in the Health Sciences Center, near where officials said the attack happened.

“It’s pretty terrifying,” Clayton said of the attack as he was leaving with his parents. But he said he would come back when classes resume Wednesday.

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