I knew this story rang a bell, and I finally found it! This is an ongoing problem with Federal law enforcement. This appeared in 2002:
"Year-old claims of missing guns and computers at the FBI, INS and three other federal law enforcement agencies were confirmed, as a Justice Department inspector general reported the agencies were missing more than 775 weapons and 400 laptop computers.
The items were reported to have been stolen, lost or gone missing mainly from the FBI over a two-year period, according to the report,....."
Missing Guns and Laptops Reported by Federal Agencies
"Year-old claims of missing guns and computers at the FBI, INS and three other federal law enforcement agencies were confirmed, as a Justice Department inspector general reported the agencies were missing more than 775 weapons and 400 laptop computers.
The items were reported to have been stolen, lost or gone missing mainly from the FBI over a two-year period, according to the report,....."
Missing Guns and Laptops Reported by Federal Agencies