Updated 4:19 p.m.: A male student went on a stabbing spree at a community college in northwest Houston on Tuesday, injuring at least 14 people, two of them critically, Harris County Sheriff Adrian Garcia said. The campus has been sealed off.
Garcia said at a press conference that an emergency call came in at 11:12 a.m. local time: "Male on the loose stabbing people."
A 21-year-old male, a student at Lone Star College near Houston, was detained. Police did not release his name. Garcia declined to say what type of weapon the man used although the injuries were mostly lacerations.
The campus, part of a Texas community college network with nearly 19,000 students, was on lockdown and being methodically searched by police.
"This is a sprawling campus," Harris County Sheriff's Department spokesman Alan Bernstein said on CNN. "It will take a long time to get through all these buildings, to interview everybody."
The suspect is believed to have acted alone, Garcia said. Earlier in the day, police had said they were searching for a possible second suspect.
Of the 14 injured, two were in critical condition, four in fair condition and eight others had minor injuries, Garcia said.
In January, at another campus of Lone Star College in the Houston area, three people were shot. The Tuesday incident was the latest of several attacks at schools across the country in the last year.
The most serious of those, a shooting in Newtown, Connecticut, last December, left 26 people dead including 20 elementary school children.
The attacks have prompted calls for tighter security at the nation's schools and a drive for tighter gun control laws.