FBI investigators have raided the home of a man believed to have originally purchased the assault rifles used in the San Bernardino, California shooting that killed 14 people.
Early Saturday, authorities searched the home of Enrique Marquez, NBC News reports.
The news outlet cites law-enforcement officials who say they believe Marquez is a friend of Syed Farook, one of the two suspects involved in the Wednesday massacre.
Authorities say Marquez is not considered a suspect in the shooting case.
The home that was searched is in Riverside, California — about 15 miles southwest of San Bernardino.
During the search, agents broke into a garage at the home and searched it using bomb-sniffing dogs. Two people, including Marquez’s father, were briefly detained during the search, according to NBC News. The father reportedly said he did not know where Marquez was.
Federal authorities cited by NBC News say “the two assault weapons were originally bought in 2011 and 2012 by Marquez,” but it was unclear whether Farook gave money to Marquez specifically for the purchases, or whether Farook bought the weapons from Marquez at a later time.
Officials have said Farook and his wife, Tashfeen Malik, were armed with four guns during the attack at the Inland Regional Center in San Bernardino: two semiautomatic handguns and two .223-caliber assault rifles, all of which were purchased legally.
In addition to the 14 people killed in the attack Wednesday, 21 others were wounded. Farook and Malik both died in a gunfight with police hours later. The FBI says it is investigating the massacre — the deadliest in the US since the Sandy Hook killings in 2012 — as an act of terrorism.
As reported by Business Insider