Authorities say guns tied to a botched federal weapons-smuggling investigation have been recovered at a second Arizona crime scene.

The Arizona Republic reports two guns were found in the back of a stolen car in Maricopa last year that had rammed two Arizona Department of Public Safety vehicles.

Federal agents contacted the DPS this week and said a trace of the guns revealed they were part of a Bureau of Alcohol, Tobacco, Firearms and Explosives sting that inadvertently put hundreds of weapons bought at Arizona gun stores into the hands of Mexican criminals.

The probe was known as Operation Fast and Furious.

Two guns also were recovered at a December shootout in Rio Rico, where a Border Patrol agent was fatally shot.