Police say the suspect opened fire and immediately fled the scene.
Arlington Assistant Police Chief Kevin Kolbye said that two students were shot, and a third student had unspecified injuries. The students are being treated at a hospital. Details on the severity of their injuries were not immediately available. An adult, believed to be a pregnant woman, fell and suffered minor injuries but declined treatment, the
Star-Telegram
reports.
The shooting was reported about 9:15 a.m.
A number of law enforcement agencies responded to the call, including police from Arlington, Grand Prairie, Mansfield and Mansfield ISD, as well as the federal Bureau of Alcohol, Tobacco, Firearms and Explosives, the
Dallas Morning New
s reports.
The shooting was evidently sparked by a fight between students. A fight broke out in a class on the second floor of the school, Kolbye said.
There are reports the shooter fired into a classroom.
The school was on lockdown until about 11 a.m.