Police in Texas are Grayson  Prestoninvestigating a fatal shooting after they said a fast-food customer killed an employee inside the store over the weekend.

The San Antonio Police Department reported the shooting took place Sunday night at a Sonic Drive-In in the northwest portion of the city and claimed the life of the store manager.

Two people of interest wanted in connection to the fatal shooting case had been identified and located, the department posted on Facebook Tuesday.

Police did not release their names or say whether they had been charged in connection to the case.

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Medical examiner ruled Sonic manager's death a homicide

The Bexar County Medical Examiner’s Office identified the victim as Daniel Shrewsbury, 33.

According to preliminary autopsy results released by the office, the victim died as a result of a gunshot wound.

Shrewsbury death, the office reported, was ruled a homicide.

A Sonic spokesperson released the following statement to USA TODAY on Wednesday:

"We are aware of the incident that occurred at our franchised location in San Antonio. The franchisee is cooperating fully with the police in their investigation. Given that this is an active investigation, we defer any further comment to the local police department."

Motive in shooting not immediately known

A motive in the fatal shooting was not immediately known, and police have not released additional details surrounding the killing.

The case remains under investigation.

Anyone with information about the case is asked to contact San Antonio police.

Natalie Neysa Alund is a senior reporter for USA TODAY. Reach her at [email protected] and follow her on X @nataliealund.