MEXICO -

The killer clown was wearing a round red nose and a wig. On Saturday, he walked into a children’s party and shot an infamous Mexican drug czar known as “El Menso” twice – once in the chest and once in the head.

Francisco Rafael Arellano Felix, 63, a former leader of the Tijuana cartel, reportedly died Friday during a children’s party. He was at a luxurious beachfront resort in Cabo San Lucas when the shooting happened, authorities told a Mexican newspaper El Universal reporter on Saturday.

The party was inside the Ocean House ballroom at The Hotel Marbella, El Universal reported. One of his two sons identified the body. The clown fled with two accomplices in a car.  Police are investigating the homicide.

The Tijuana cartel was a violent operation that transported cocaine, marijuana and heroin into the U.S. from Mexico. The rivalry between the Tijuana cartel and the Sinaloa cartel has fueled violence in Mexico and Southern California for decades.

Arellano was born Oct. 24, 1949 in Sinaloa as the son of a mechanic. He was the eldest of seven brothers and three sisters. He and his brothers went from smuggling clothes and candy to owning a nightclub.

A reporter from the Mexican Excelsior said Arellano recruited young men from the middle and upper class of Tijuana -- a practice that earning the cartel the nickname of the “narcojuniors” in Mexico.

In Aug. 7, 1980 in San Diego, Arellano allegedly sold 205 grams of cocaine to a DEA agent. In 1993, he was arrested when a Roman Catholic Cardinal died in an attempt to kill a drug rival. He was extradited to the U.S., where he served six years in prison and was released March 4, 2008.

Witnesses of his death include relatives who were at the children's party Friday.