At least 14 people have been stabbed in an attack on a campus of Lone Star State College near Houston, Texas.
Four of the victims were critically wounded and taken by helicopter to a hospital.
Police near Houston say they have a suspect in custody. They are giving little information on him or the type of weapon that was used.
Three people were shot and wounded on a separate Lone Star College campus in January. That shooting came just weeks after 26 students and teachers were massacred at a Connecticut elementary school, leading to the renewed debate about gun control in the United States.