Four students were injured in a shooting Tuesday afternoon at Wilmer-Hutchins High School in southeast Dallas, police said.

Dallas police responded just after 1 p.m. to a shooting incident reported at Wilmer-Hutchins High School, located at 5500 Langdon Road. One student told CBS News Texas that she heard seven gunshots. Authorities confirmed at around 2:20 p.m. there was no active threat and that the school campus had been secured.

Jason Evans, a Dallas Fire-Rescue spokesman, told the Dallas Morning News that three of the students were between the ages of 15 and 18 and that all were injured by gunfire. A 17-year-old suspect was booked into Dallas County jail at 9:32 p.m. after turning himself in, the paper reported. His bail was set at $600,000.