A teenager was shot and killed at a northeast side Whataburger Monday night.

Deputies were called out to the Whataburger at Walzem and FM 78 around 10:00 p.m.

The 15-year-old who was killed was just coming from a funeral activity for another teenager shot and killed earlier in the week. On Sunday, 16-year-old Reggie Adams was killed in an apparent drug-related murder in Converse. A candlelight vigil was held for him at 7:30 p.m. Monday about two and a half miles from the Whataburger.

Deputies say there was an argument at the vigil and it continued at the Whataburger, where the teen was shot and killed. Investigators have not connected it to Adams' murder.

Deputies have not made any arrests and are looking for four vehicles, in red, gold, black and navy blue.

Officials also hope surveillance video will help them in the investigation.