One student was killed and another injured following a school shooting that rocked the Dallas suburb of Arlington on Monday morning. Officials said that Lamar High School entered lockdown after shots were fired outside the building around 6:55 a.m., around 40 minutes before classes were set to begin. A spokesperson for the Arlington Police Department said that while officers were responding to the emergency, they were able to identify the suspect based on descriptions from witnesses. “Our officers were able to kind of follow him, surround him, and he was taken into custody without incident,” the spokesperson said, adding that the department recovered the murder weapon nearby. The suspected gunman, identified as a Lamar student under 17 years old, is being charged with capital murder after fatally shooting one of the victims, a male student, police later said, with more potential charges to follow pending an active police investigation. The second victim, a female student, was hit by shrapnel and is receiving medical care for non-life-threatening injuries, according to a police spokesperson. Police believe the shooting may have been targeted, according to local outlet KDFW, but a motive was not immediately clear.