A former security guard from Long Beach who was charged with abducting and sexually assaulting more than a dozen sex-trade workers in South Los Angeles pleaded no contest Monday to several felonies, according to the Los Angeles County District Attorney’s office.

Ferdinand Ervin Flowers, 35, now faces 30 years to life in prison for two counts each of forcible oral copulation and assault with intent to commit forcible oral copulation, authorities said. He’s scheduled to be sentenced on Oct. 29.

Prosecutors alleged Flowers is responsible for attacks on 13 victims between Jan. 30, 2014 to Jan. 12, 2018.

“The defendant often used a handgun to rob the victims, take them to an unincorporated area of Carson near Compton and sexually assault them,” prosecutors said.

Long Beach Security Guard Arrested for Kidnapping, Sexually Assaulting 14 Women

Police arrested Flowers, a Long Beach resident, on Jan. 12 after detectives spotted a 19-year-old woman getting out of his car near where he’d dropped off previous victims, authorities said at the time.

Flowers had picked up the woman in Lynwood before driving to Compton, pulling a gun on her and robbing her, police said.

Back in December, police asked for help finding whoever was approaching sex-workers, getting them into his car and then taking them to a remote industrial area area where he’d sexually assault them at gunpoint.

Flowers’ youngest victim was 15, police said at the time of his arrest.

Flowers would abduct the women and teenagers along the Alameda Corridor, a cargo railway that links the ports of Long Beach and Los Angeles to the rest of the state, officials said.

Detectives homed in on Flowers after linking multiple sexual assaults through DNA and discovering the pattern of attacks, authorities said.