Emergency responders gather at the high school on the campus of the Franklin Regional School District, where several people were stabbed at Franklin
Emergency responders gather at the high school on the campus of the Franklin Regional School District, where several people were stabbed at Franklin Regional High School, Wednesday, April 9, in Murrysville, Pa., near Pittsburgh. (Sean Stipp)

MURRYSVILLE, Pa. - Five students remain hospitalized Saturday in the wake of a stabbing rampage at a suburban Pittsburgh high school.

One 15-year-old and two 16-year-olds are in critical condition in the intensive care unit of Forbes Regional Hospital. A 17-year-old remains in critical condition at UPMC Presbyterian Hospital. A 14-year-old student is listed in fair condition.

The teens were among the 21 students stabbed or slashed at Franklin Regional High School on Wednesday. A security guard was also wounded.

Sixteen-year-old Alex Hribal faces four counts of attempted homicide and 21 counts of aggravated assault. Police say they don't yet have a motive for the rampage.

It's not clear when the high school will reopen.