A suspected stash house in South Los Angeles run by gang members accused of deadly drug dealing at notoriously MacArthur Park was swarmed Wednesday morning by federal agents — who caught their targets allegedly trying to flush fentanyl down the toilet.

The Post had a front-row seat as as nearly two dozen Drug Enforcement Agency officers raided the home of alleged narco queen Mallaly Moreno-Lopez and an accomplice in the largest DEA bust in California in at least a year, authorities said.

DEA agents arresting Karen Orelana-Garcia and Malally Moreno-Lopez in Westmont, South Los Angeles.

Ringo Chiu for CA Post

Agents surrounded their South LA apartment and called for Moreno-Lopez and accused partner in crime Tafur Jackson-Lora to come out. When they did not, agents broke down their fortified steel door and rushed inside.

During the raid, the suspects allegedly tried to get rid of their stash by filling the toilet with baggies of fentanyl in a desperate final act.

Meanwhile, DEA agents carried two other simultaneous raids, including one at Calabasas mansion, where agents recovered nearly 40 pounds of fentanyl. In all, 25 dealers were targeted in the raids, dubbed “Operation Free MacArthur Park.”

The goal of the busts is to stem the supply of deadly fentanyl feeding addicts in MacArthur Park, which has become the locus of drug dealing in downtown Los Angeles, said First Assistant U.S. Attorney Bill Essayli.

A damaged door frame and broken locks after a drug raid.

Ringo Chiu for CA Post

A toilet bowl containing numerous small white packages floating in a blue liquid, with a bag containing more packages on the floor.

Ben Chapman

“We’re targeting the open-air drug market that has terrorized downtown Los Angeles,” he said. “Today’s operation is focused on the street-level suppliers and dealers.”

The DEA’s raid targeted the 18th Street Gang, MS-13 and the Crazy Riders, which together oversee fentanyl sales and distribution downtown, authorities said.

The raid on the home of Moreno-Lopez and Jackson-Lora should stop fentanyl from reaching the park’s notorious Alvarado Street corridor, authorities said.

DEA agents described Moreno-Lopez and Jackson-Lora as mid-level distributors who work as liaisons between the cartel and lower-level dealers.

The police and federal agents have repeatedly targeted the illegal drug trade in MacArthur Park this year.

A Drug Enforcement Administration agent arresting a suspect and applying handcuffs during a drug raid.

Ringo Chiu for CA Post

The Post was present when LAPD officers in March arrested Keiko “Moms” Gonzalez, the feared leader of the 18th Street Gang. During that raid, the mother of Moreno-Lopez was also arrested, federal agents said.

The Post also stood by last month when federal agents arrested affiliates of the Mexican Mafia, the prison-based “gang-of-gangs” that calls the shots on narcotics sales in California and beyond by controlling street gangs such as 18th Street and MS-13.

By noon on Wednesday, federal agents and police had arrested 19 of 25 targets named in a federal complaint. Agents conducted three raids in total, including one that netted 25 pounds of fentanyl, authorities said.

The busts were the culmination of more than 45 days of surveillance and investigation that included the use of drones to track the movement of suspects.  

DEA agents arrest Karen Orelana-Garcia and other suspects during a drug raid.

Ringo Chiu for CA Post

LA Mayor Karen Bass previously blasted a federal operation at MacArthur Park in July — which saw immigration agents descend on the park to root out MS-13 gangbangers and open-air drug markets —calling it “outrageous” and “un-American.”

The drug trade there has been blamed for countless deaths.

The real aim of law enforcement, one DEA agent said, is to put and end to the pain.

“That’s what we notice when we’re out the most,” the agent said. “People are really suffering from the effects of those illegal drugs. They’re in a bad state.”