A gun that was found inside a Memphis home after undercover officers served a drug warrant is part of a shipment of 51 guns from Miami that was reported stolen in 2006.
The raid took place March 5 in the 400 block of Berkshire.
According to a police affidavit the weapon belonged to William Vanderford, one of the six who were arrested.
MORE: 6 arrested in Berclair drug raid where officer shot
MORE: MPD Officer shot in Berclair area
The gun in question is a Taurus revolver. It was part of a shipment of 51 guns that left Miami and were reported missing at truck stop in Memphis.
The ATF is very interested in talking to the 50-year-old Vanderford about he came into possession of the gun. His answers could lead federal agents to the rest of stolen cargo.
"We want to find out where that individual obtained the firearm, how that individual obtained the firearm," said ATF Special Agent Michael Knight. "Where did they purchase it? Did they purchase them from a pawn shop? From a gun shop or the Internet? We want to follow the gun back (to its origin).
"If it's 50 firearms stolen or one firearm that is stolen, we are concerned, based on the fact of going into commerce," Special Agent Knight added.
Two ATF agents were with Memphis police when the raid was conducted.
About a dozen of the stolen weapons have been recovered over the years in Tennessee, Mississippi, and Michigan Special Agent Knight said. None of the recovered weapons were used in the commission of crime. Many of them were sold on the street or in pawn shops.
As for the alleged Memphis connection, Vanderford is due in court Friday on drugs and weapon charges related to the raid.