Garland police say teenagers, as young as 14, were those killed and injured in a shooting inside a gas station Sunday evening.
Police have not identified the three boys who were killed and the other who was injured, but a spokesman told The Dallas Morning News on Monday that they ranged in age from 14 to 17 years old.
Garland police will be holding a press conference at the department headquarters at 4 p.m. Monday to discuss the incident.
One of the boys remained in the hospital Monday, Garland police spokesman Lt. Pedro Barineau said. The boy was taken to the hospital in critical condition Sunday night, but his condition was unknown Monday afternoon.
No one had been arrested as of noon Monday, Barineau said. Motive and details of what led to the shooting were still being investigated, he said, but noted nothing was taken from the store and police ruled out robbery as a motive.
Officers responded to the shooting call about 7:30 p.m. at a Texaco in the 700 block of West Walnut Street, near downtown Garland.
Surveillance footage showed the gunman get out of a white Dodge pickup truck and open fire inside of the store, striking the four victims, police said. The man then got in the rear passenger side of the truck and sped off.
Police said the shooter was wearing a baseball cap, blue surgical mask and dark-colored athletic shorts. He was captured on video not wearing a shirt, police said.
Anyone with information may contact Garland police Department at 972-485-4840.
Anonymous tips may be submitted to Crime Stoppers at 972-272-8477. A reward of up to $5,000 is being offered for information that leads to the identity and arrest of the gunman.
Staff writers Krista Torralva and Nataly Keomoungkhoun contributed to this report.