By The Associated Press

A new sentencing date has been set for two men who admitted to participating in a gun smuggling ring that was investigated by the federal government in Operation Fast and Furious.

Jacob Wayne Chambers and Jacob Anthony Montelongo had been scheduled to be sentenced on Monday for their earlier guilty pleas to one conspiracy charge, but sentencing has been reset for Feb. 25.

Federal investigators have faced harsh criticism for allowing suspected straw gun buyers to walk from weapons shops with guns, rather than arrest suspects and seize the guns there. Two guns bought by another admitted ring member were found in the aftermath of a 2010 shootout that killed a Border Patrol agent in Southern Arizona.

So far, 10 of the 20 alleged ring members have pleaded guilty.