At least three people were injured on Tuesday in a shooting at a college in Houston, the authorities said. At least one suspect was in custody.

Officials at the North Harris campus of Lone Star College announced an evacuation at 12:52 p.m. on its Web site, citing an incident involving “a couple of armed suspects.”
Harris County Sheriff’s Department vehicles blocked access to the roads leading to the college on Tuesday afternoon. Students gathered in groups outside an off-campus bookstore near the college, located in northern Harris County about 30 minutes outside downtown Houston.