(CBS/AP) HARRIS COUNTY, Texas - At least 12 people were injured in a stabbing incident Tuesday on the CyFair campus of Lone Star College in the Houston area, according to volunteer fire officials, CBS affiliate KHOU reported.
A Harris County sheriff's official said one person has been arrested.
Four victims were taken to Memorial Hermann Hospital, two by Life Flight helicopters and two by ambulance.
At least one of those patients reportedly has critical injuries.
North Cypress Medical Center confirms that it has received six patients.
The campus is on lockdown, according to Lone Star college officials, KHOU reported.
One student who was trying to exit the campus said one of her classmates was stabbed.
"I had just left class out of the HSC [Health Science Center] building, and as we were leaving we saw the cops coming. I called to check on another classmate who was still inside the building and she said the classroom was on lockdown and she said one of the classmates had been stabbed," said Margo Shimfarr-Evans. "It happened in the hallway, we have a lab and lecture, and down the hallway it's all lab classes and a classmate in the lab class got stabbed."
Lone Star posted an alert on its website just before 12 p.m. warning students of two armed suspects and saying one person remains at large. The alert warned people to seek shelter in a secure location.
A different Lone Star system campus was the site of a January shooting. Two people were wounded, and a 22-year-old man was charged with aggravated assault.