VILNIUS, Lithuania (AP) — Lithuania’s Defense Ministry says a civilian man was accidentally shot and wounded after entering a restricted military area during an exercise involving U.S. paratroopers.

Armed forces spokesman Mindaugas Neimontas said Friday said the man was hospitalized with gunshot wounds to his legs, arm and chest late Thursday on the military base in Gaizunai. It said his injuries were not life-threatening.

It was unclear why and how the man, who was not identified, had entered the base. Local media said he was collecting spent cartridge cases to resell the metal. Lithuanian authorities were investigating the incident.

Paratroopers from the 173rd Airborne Brigade, based in Italy, were in Lithuania to take part in NATO exercises launched in the wake of the Ukraine crisis.

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