LOS ANGELES (CBSLA.com) – LAPD Chief Charlie Beck announced the arrest of a “secondary suspect” and the expected imminent surrender of a “primary” suspect Tuesday in the posting of a video on social media that was initially viewed as a threat to police.

Officers arrested the secondary suspect in Downey over the weekend, and served a warrant this morning at the residence of the primary suspect, who remains at large, Beck told the Police Commission this morning.

READ MORE: Hollywood Bowl Releases Summer Schedule, Includes 5 Free Shows For Healthcare And Workers

“Right now Robbery-Homicide Division is actively looking for him,” Beck said. “His attorney is in contact with Robbery-Homicide Division. We’re trying to negotiate that surrender at this point.”

He did not identify either suspect.

In a statement that was released after Beck’s announcement, the LAPD said detectives “identified the vehicle and three suspects who were inside filming.”

“The investigation revealed that the film was made by members of an early 1990s rap group no longer in fashion,” the police statement said. “The film was made and posted on social media to ignite a comeback by the rap group.”

On Thursday, footage posted to social media appeared to show an individual who recorded video from inside a car parked behind an LAPD cruiser and brandishing a handgun.

READ MORE: Hundreds Sign Up To Denounce Vaccine Passports At Orange County Board Of Supervisors Meeting

According to police, three suspects were inside the vehicle when the video was recorded.

CBS2/KCAL9 was told the video was posted on Instagram, but it has since been taken down.

Authorities have determined the video was created for entertainment purposes only. It does not pose a credible threat to police officers.

The investigation is ongoing.

Anyone with information regarding this incident has been urged to contact Los Angeles Police Department’s Robbery Homicide detectives at (213) 486-6850.

MORE NEWS: Early Morning Pursuit With Stolen U-Haul Crisscrosses LA, Orange Counties; Ends In Fire

(©2015 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. Wire services contributed to this report.)