Another "Fast and Furious" gun turns up at Mexican shootout scene that left five dead

From The Hill newspaper:

A gun from the failed U.S. operation known as "Fast and Furious" turned up at the scene of a shootout between Mexican authorities and alleged cartel gunmen last month, according to CNN.
U.S. officials told CNN at least one AK-47-style gun that could be traced back to the failed gun-walking scheme was found at the scene.
The shootout on Dec. 18 left five alleged cartel members dead in Puerto Penasco, a popular tourist site in Mexico. . . .
Grassley, in a statement to CNN, expressed regret that no one in the administration had yet been held accountable.
“Unfortunately, guns from Fast and Furious will be found in operations like this for years to come," he said. . . .