Coalition forces have seized the largest cache ever found in Iraq of explosively formed penetrators, an especially lethal type of bomb, according to military officials.

Acting on a tip from a local Iraqi, soldiers descended on a home in Sa’ada Village and discovered a stockpile that included 124 fully-assembled EFPs, according to a release issued Wednesday by Multi–National Division–North.

The cache also included 159 copper disks, a component of EFPs, 600 pounds of C4 and other explosive materials, 100 mortar rounds, 31 rockets (107 mm), two mortar tubes and 20 claymore-type mines, the release stated.

“I was worried that the room was unstable because it smelled like explosives and nitric acid,” said Capt. Jason Rosenstrauch, commander of Troop B, 2nd Squadron, 1st Cavalry Regiment, 4th Stryker Brigade Combat Team.

Rosenstrauch led the raid, which unfolded about five miles south of Khan Bani Sa’ad in Diyala province.

U.S. military officials say citizens in the area have been cooperating with the troops more since an operation was launched six weeks ago that cleared the area of many insurgents.

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