Two young adults now face felony charges for allegedly collaborating in a drive-by shooting at an occupied home in northern Livermore earlier this month.

The Alameda County District Attorney's Office filed a criminal complaint against Alejandro Quintero-Avalos, 20, of Tracy and Brenda Gaspar-Sanchez, 21, of Livermore last week in connection with a non-injury shooting on Broadmoor Street on the night of Jan. 6.

Livermore police allege Gaspar-Sanchez drove Quintero-Avalos to a house on Broadmoor Street, where they know a resident of the home, and he fired multiple gunshots at the residence. A motive has not yet been identified, according to authorities.

The police investigation began after a report came in just before 9 p.m. Jan. 6 about shots fired in the area of Broadmoor Street and Scenic Avenue. Arriving officers found no injured victims but did locate shell casings in the area.

Investigators later determined suspects in a vehicle fired several shots into a residence that night, with one bullet hitting a parked car and two more striking the garage door. Police said multiple people were inside the home at the time.

"The investigation revealed that based on cellular data analysis, surveillance video, eyewitness statements as well as physical evidence located at the scene, Brenda Gaspar and Alejandro Quintero-Avalos were responsible for the shooting and conspired together to commit this crime," Livermore police Officer James Tompkins wrote in a probable cause declaration.

Nearly two weeks into the investigation, Quintero-Avalos and Gaspar-Sanchez were arrested on Jan. 19. Police reported that several search warrants were served in Livermore and Tracy as part of the case and that the gun used in the shooting was recovered.

According to Tompkins, Gaspar-Sanchez admitted after her arrest that she drove Quintero-Avalos to the front of the Broadmoor Street home while he shot a gun at the residence.

Quintero-Avalos and Gaspar-Sanchez were each charged on Jan. 23 with felony shooting at an inhabited dwelling, along with special allegations for violence and gun use.

Quintero-Avalos also faces felony charges of carrying a loaded firearm on a public street in a city and committing an armed criminal action, plus associated gun and violence enhancements. Gaspar-Sanchez faces a separate felony count of permitting another to shoot a gun from her vehicle.

It was not immediately clear whether the two defendants had yet entered a plea to the charges against them.

The Jan. 6 incident on Broadmoor Street marked the second shooting in public in a 30-hour period in Livermore. A person was hurt when they were grazed by a bullet after a verbal confrontation escalated to gunfire on the afternoon of Jan. 5 at the intersection of Enos Way and Junction Avenue, according to police.