The exercise took place at Kilkis
A man was killed after being run over several times near Thessaloniki in northern Greece.
The 20-year-old, who was not named, was found on the Thessaloniki-Kilkis national highway late Tuesday.
Police said a vehicle driven by a 41-year-old woman hit the pedestrian who was subsequently struck by several more vehicles.
An investigation into the death is ongoing.
Police are investigating the death of two foreign men who stayed at a hotel for migrants in central Macedonia.
A 30-year-old Afghan was found hanged on Christmas Day in the afternoon at a bridge by the hotel at Mouries, near Kilkis. Then a 35-year-old Iraqi national was found hanged in a corridor of the hotel.
One woman was killed and two people injured on Thursday in a crash involving a car and a train at an unmanned level crossing in the community of Myriofitou near Kilkis in northern Greece.
Local authorities have launched an investigation into the incident, while the national railway operator, Trainose, said the accident caused delays on the Thessaloniki-Drama route.