AP � Austrian police say they have no information yet on the motives of a man who attacked a guard outside the Iranian ambassador�s residence in Vienna and was then fatally shot.

Police said the guard, a 23-year-old Austrian soldier, first tried to deter the assailant in Sunday night�s incident with pepper spray. After the attacker � a 26-year-old Austrian and Vienna resident � stabbed him, he fired several shots. The assailant died at the scene.

The soldier sustained cuts to his right arm but was protected from more serious injuries by his stab-proof jacket.

Police said Monday that the assailant�s motives are �completely unclear� and the local branch of the domestic intelligence and anti-terror agency is looking into the case.