The FBI 's Operation Fast and Furious lost track of hundreds of weapons in Mexico . Hoover was serving as an assistant to the new ATF deputy director when he submitted his retirement papers Monday , officials said . Two of the missing weapons were found at the scene of a border patrol agent 's murder . FBI Deputy Director Hoover was among those criticized by a congressional report . Hoover officially submitted his retirement papers this week .
The FBI 's Operation Fast and Furious lost track of hundreds of weapons in Mexico . Two of the missing weapons were found at the scene of a border patrol agent 's murder . FBI Deputy Director Hoover was among those criticized by a congressional report . Hoover officially submitted his retirement papers this week .