CAMP PENDLETON – The Marine Corps on Thursday dropped all charges against a Camp Pendleton sniper accused of wrongly shooting two men he thought were planting roadside bombs in Iraq.

Sgt. John Winnick II, 24, of San Diego, had been charged with involuntary manslaughter, aggravated assault and dereliction of duty in connection with the June 17, 2007, incident near Lake Tharthar in western Iraq.

Prosecutors contended Winnick had violated the rules of engagement by shooting too hastily at a truck driver carrying a satchel and his three passengers. The four men got out at an intersection where roadside bombs previously had been planted.

Winnick and several other snipers had been staking out the crossroads.

All four men were wounded, two fatally, but no bomb-making materials were found.

Winnick said he believed he was protecting his fellow Marines from insurgent bombers.

Lt. Gen. Samuel Helland, commander of the 1st Marine Expeditionary Force, followed the advice of the pretrial hearing officer in dismissing the charges.

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