At least three people – including the shooter – were reportedly shot at a Texas college Shootout Tuesday, US media reported but few details were available.

A 22-year-old man has been charged in a shooting on a community college campus in Texas that left three people wounded, one critically, authorities said.

Carlton Berry was charged with aggravated assault following the shooting at the Lone Star College near Houston on Tuesday, and was being treated in hospital, said Harris County Sheriff’s office spokesman Alan Bernstein.

The two people involved in the argument in the Texas college shootout were treated in hospital, including a woman with student identification with a medical issue that was not a gunshot wound, authorities said.

A maintenance worker who had been standing nearby was shot in the leg.

No other identifications would be made at this time, Bernstein said

An ambulance dispatcher said his company had transported three people to local hospitals from the site of Texas college shootout. One of them was in critical condition and the other two were in “urgent” condition, he said.

The shooting at the community college with some 10,000 students was the latest incident at a U.S. school since a gunman massacred 20 children and six adults in Connecticut in December.

The argument began as a verbal exchange and escalated to shooting, authorities said. A handgun was involved but no other information was given about the weapon.

The Lone Star College System is the largest institution of higher education in the Houston area, according to its website. Student enrollment is 90,000 and there are six colleges in the system.

Television footage showed people lying on the ground and at least one person being loaded into an ambulance on the campus of Lone Star College near Houston.

“We know that shots have been fired and we are in a shelter-in-place situation on the campus,” Vicki Cassidy, manager of media relations for Lone Star College System, in a statement released to the media regarding Texas college shootout.

“It’s a pretty chaotic scene at this point in time.”

The shooter was among three people wounded in the incident at the school’s library, KHOU news reported.

Witnesses reported that a male was brought out of the library handcuffed to a stretcher, the station reported.