The San Antonio Police Department announced on Thursday that they've made an arrest in the case of a 16-year-old girl that was shot behind Burke Elementary on the far west side on Monday.

SAPD arrested 17-year-old Ezequiel Vela and charged him with two counts of aggravated assault with a deadly weapon.

RELATED: SAPD: 16-year-old girl shot in the chest behind Burke Elementary

Police say that on Monday, two Hispanic males and two Hispanic females (including the victim) riding in a black Mitsubishi Lancer pulled into an alley next to the school and walked onto school property to smoke when one of the males pulled out a semiautomatic handgun and opened fire for an unknown reason. According to SAPD, the victim ran to a nearby home and called for help while the other three fled.

SAPD says that this is still an ongoing investigation and more arrests are expected. They're compelling anyone with any information about the case to call Crime Stoppers at 210-224-STOP.