Doug Stanglin, USA TODAY
At least three people were wounded Tuesday at a Lone Star College campus in the Houston area after two men opened fire on each other in an academic building, authorities said.
At least of shooter and two bystanders, both students, were wounded, and a fourth person suffered a heart attack. One person was listed in critical condition.
The wounded shooter was taken into custody at the scene and the other surrendered about two hours after fleeing campus, police said.
The shooting occurred around 12:20 p.m. CT (1:30 p.m. ET) at the North Harris campus, about 20 miles north of downtown Houston, one of six that serves the 90,000 students enrolled in the community college system.
Around 2:30 p.m., the second alleged gunman surrenderd at Northwest Medical Center, KHOU-TV reports, citing a law enforcement source. He may have also been wounded.
The school was evacuated and closed for the rest of the day.
Earlier, KHOU- quoted student Brittany Mobley as saying "two dudes basically get into an altercation" and one shot the other.
The station quoted one of its campus reporters as saying one of the injured was taken from the library while apparently handcuffed to a stretcher.
Although police feel the danger on campus had been "mitigated," Young said, officers were searching for a second suspect who fled to a nearby development area.
He was described as a black male, 18 to 20 years of age wearing a red shirt and Falcons cap.
Reginald Neal said his nephew, Jody Neal, 24, was one of the wounded.
"All I know he got shot three times. That's all I know," he told KPRC-TV. "He got shot in one of his arms, in the stomach and the leg."
"He was sitting in the study room. There (were) three people on the computer and a guy walked up the stairs and opened fire on him," said Stacy Neal, Jody's sister. "They said it was just one guy that came in with a gun."
Mark Zaragosa spotted two victims when as he left an EMT class and stopped to help before police arrived.
"The two people that I took care of had just minor injuries," he told KHOU. "One gentleman had a gunshot to the knee and the [other] actually had an entry wound to the lower buttocks area."
Cody Harris, 20, said he was in a classroom with about six or seven other students waiting for a psychology class to start when he heard eight shots. He and other students looked at each other, said, "I guess we should get out of here," and fled.
"I was just worried about getting out," Harris said. "I called my grandmother and asked her to pick me up."
KPRC-TV quoted a student, Amanda Vasquez, as saying she heard "5 or 6" shots while sitting in English class. She said students quickly scrambled, hiding under desks.
An alert on the college's website called on students, faculty and staff "take immediate shelter where you are."
Aerial footage from local television stations showed police cars and ambulances parked on the campus. Emergency personnel could be seen tending to people on stretchers, while others ran from a building led by officers.
Four nearby schools - Nimitz High School, Nimitz Ninth Grade School, Dunn Elementary School, Parker Intermediate School - were placed on lockdown in the immediate aftermath of the Lone Star College shooting, said Mike Keeney, a spokesman with the Aldine Independent School District.
The schools are located less than a mile from the Lone Star College campus where the shooting occurred, he said. The lockdown lasted for about three hours and impacted some 4,600 students, he said. Extra security guards were dispatched to the schools.
The schools reopened around 3:30 p.m. CST, and students were allowed to leave, Keeney said. "You never take anything like this lightly," he said.