A 19-year-old Rialto man has been arrested and charged with the October 2007 shooting death of a man at a Fontana party, officials said.

Anthony Marquez, 19, was taken into custody at a Rialto home Thursday morning, and was jailed at the West Valley Detention Center in lieu of $2.1 million bail. He and another man are charged with firing handguns to kill 20-year-old Diego Diaz at a home on Alder Avenue on Oct. 28, 2007, according to a complaint filed in San Bernardino County Superior Court.

Fontana police suspect that Marquez belongs to a local “party crew,” which they said is the equivalent to a criminal street gang. The shooting was believed to be caused by a dispute between party crew members, Fontana police Sgt. Jeff Decker said.

During Thursday’s arrest of Marquez, detectives also seized three firearms, Decker said.

—Paul LaRocco
plarocco@PE.com

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