An off-duty special guard was killed and an Albanian national was injured in the early hours of Monday in the Athens district of Kallithea when two unidentified gunmen possibly riding a motorcycle opened fire on them in a stopped car.

The gunmen opened fire with a Kalashnikov rifle at 3:30 a.m. against a stopped car driven by the 30-year-old special guard, who was off-duty at the time, and a 26-year-old Albanian passenger.

The car was riddled with more than 20 bullets, killing the special guard on the spot and seriously injuring the passenger, who was undergoing surgery on Monday morning at an Athens hospital.

The motive of the shooting was being investigated by Attica security police.