An Arizona sheriff says that two guns seized as part of a major drug smuggling bust have been connected to a botched federal investigation known as "Fast and Furious."

"Fast and Furious" was a controversial Bureau of Alcohol, Tobacco and Firearms' investigation that lost track of up to 1,400 weapons that were sold in Arizona gun stores to suspected straw buyers for Mexican drug gangs.

A number of guns have been recovered at crime scenes in Mexico and two were found at the scene of a Border Patrol agent's death.

Now Pinal County Sheriff Paul Babeu says two more "Fast and Furious" guns have been seized in Arizona from members of the Sinaloa cartel, Mexico's most powerful.

The two guns were among 108 weapons seized in three busts in September and October that authorities said effectively dismantled a major drug smuggling ring tied to the Sinaloa cartel.