UNION CITY — Two juveniles were fatally shot while sitting in a van outside a Union City elementary school early Saturday morning, authorities said.

Callers to 911 reported hearing gunfire in the area of Sherman Drive and Colgate Drive at 1:26 a.m. When officers arrived, authorities said, they found two boys, ages 11 and 14, shot in the parking lot of Searles Elementary School. The older boy died at the scene, and the younger child died en route to a trauma center.

Union City police have not released the names of the children.

A post to the New Haven Unified School District Facebook page, which has since been deleted, said that one of the victims was a student at Itliong-Vera Cruz Middle School in Union City. District spokesman John Mattos said the name of the school was “posted in error” on the website, but was accurate.

School Superintendent John Thompson said in a statement the other victim was a former student of the district. Mattos declined to say where the victim last attended school.

Union City Police Lt. Steve Mendez said there was no sign of a connection between the shooting and the school where it took place. He added that people occasionally gather in the relatively secluded parking lot.

“(The school) happened to be where it took place,” Mendez said.

No arrests have been made in the double homicide. Police say they have not identified a motive, but believe the shooting could be gang related. Crime scene investigators on Saturday collected shell casings and other evidence from the parking lot.

Union City police are investigating the possibility that an earlier shooting may be related to the Saturday morning slayings. About 12:30 a.m. on Nov. 20, two men were shot and wounded near the intersection of 8th and C streets in Union City.

The men were treated at a local hospital and released. Police cautioned that no evidence so far has linked the two incidents.

Mendez said police spent the morning talking with neighbors who live in the residential area that surrounds the school. They were working to put together descriptions of any suspects or vehicles that may have been involved, and to determine any motive for the fatal shooting.

“We don’t have any of that right now,” Mendez said. “Our detectives are out there trying to contact neighbors.”

Sherman Drive remained closed between Colgate Drive and 15th Street Saturday morning.

Thompson said the district “will have support for our students and staff at the sites where these students attended when school resumes after the Thanksgiving break.”

Thompson added, “We also work closely with the Union City Police Department to ensure that our schools are as safe as they can be.”

Anyone with information about the shooting is asked to call Detective Joshua Clubb at 510-675-5227, or the Union City police tip line, at 510-675-5207 or tips@unioncity.org.

Check back for updates.