A suspect has been charged with aggravated assault over a shooting that left three people wounded at a college in the US state of Texas, say police.
Carlton Berry, 22, shot a man during an argument, police said, and apparently shot himself. He and the other person in the dispute were taken to hospital.
A maintenance worker was injured in the cross-fire.
The latest incident of gun violence, it comes amid a major push for gun control by the Obama administration.
The shooting happened outside near a campus library at about 12:30 local time (18:30 GMT) on Tuesday.
Hiding under table
Police spent about 90 minutes scouring the campus and the surrounding woods for the gunman.
Mr Berry arrived soon afterwards at a hospital and told medical workers he had accidentally shot himself in the hip.
He remains in hospital under police guard.
Police have said one of the two men involved in the argument was enrolled at the college.
In total, four people were brought to two hospitals, including a woman who suffered a medical emergency. One person was critically wounded.
Witnesses told local broadcaster KHOU they had seen a man pull out a gun during an argument with another man.
"I saw two dudes basically get into an altercation and the dude that shot, he basically got angry and started shooting the other guy," Brittany Mobley said.
Gun in schools
A student who was leaving an emergency-responder class said he had helped two injured people, one who had been shot in the knee and another with a wound to the lower buttocks.
The campus, about 20 miles (32km) north of Houston, has some 19,000 students.
Several school districts in Texas have allowed staff to carry guns on campus. Guns are not allowed on university campuses, but the state legislature may debate a bill to allow it this year.
The US gun debate gained new impetus last month after a school shooting that left 20 children and six teachers dead in Newtown, Connecticut.
Last week, President Barack Obama unveiled the most sweeping gun control proposals in two decades, including calls for a ban on assault weapons and high-capacity magazines as well as wider background checks on gun buyers.