A Polish priest is alleged to have slashed a homeless man in the head with an axe before setting him on fire while he was still alive and leaving him to die on the side of the road.

The priest, only identified as Miroslaw M. in line with Polish privacy rules, is believed to have clashed with victim Anatol Cz. while driving near Grójec late on Thursday before attacking him and fleeing the scene.

Aneta Góźdź, a spokesperson for the Radom District Prosecutor's Office, said the priest, 60, struck the victim with an axe 'several times', doused him in flammable liquid and set him on fire before driving away.

A cyclist found the victim, 68, still alive and engulfed in flames before calling for help, Góźdź said in the most recent statement, published on Saturday.

Four fire brigade teams, police and an ambulance were mobilised to help save the man, Polish channel TVP 3 reported. Despite their efforts, the victim died.