U.S. troops in Baghdad took a second look at a suspect’s truck about a month after arresting its driver, and allegedly found a large weapons cache they’d overlooked on first inspection.

The soldiers, from Troop A, 7th Squadron, 10th Cavalry Regiment, 1st Brigade Combat Team, 4th Infantry Division, had seized the wheat-transporting dump truck on May 9, officials said. At the time, the soldiers found seven fuses, 15 mortar tips and wiring used in roadside bombs, U.S. officials said. They arrested the driver at the time.

But then, according to a news release issued Thursday, the troops searched further. On May 30, they allegedly found 28 Katyusha rockets, 82 anti-personnel mines, 43 rocket-propelled grenades, 30 mortars and other explosives. The weapons were found under bags of wheat in the bed of the truck, officials said.

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