The Los Angeles Police Department has fired an officer suspected in a fatal shooting at a Pomona nightclub. The termination of rookie Officer Henry Solis, 27, follows the issuance of an arrest warrant in his name Monday. Solis is suspected of shooting and killing Salome Rodriguez, 23, after the pair left the Viva Tequila Lounge and Nightclub in Pomona Friday.

“Henry Solis failed to meet the minimum standards of the Los Angeles Police Department and has been terminated effective immediately,” Los Angeles Police Chief Charlie Beck said in a statement Tuesday.

Police have suggested Solis is on the run, armed and dangerous, the Los Angeles Times reported. Solis did not show up for work Saturday, the day after the nightclub shooting.

Authorities say Rodriguez and Solis, who was off-duty at the time, got into a confrontation after leaving the club Friday night. It remains unclear what provoked the disagreement or how the two knew each other, police told the Los Angeles Times. Rodriguez was then shot multiple times in a nearby parking lot.

Rodriguez’ mother has called on Solis to turn himself in.

“Why are you running?” Lidia Angelica Rodriguez said in an interview with the Inland Valley Daily Bulletin. “Why did you do this? Why are you being a coward? Just turn yourself in. I can’t believe someone with a badge and a gun could do that to him.”

“He was a good officer, as far as we know,” LAPD Lt. Ronald McDonald told the Times. “Whatever happened, happened.”