Several people were injured in Zagreb when a large group of Croatian football fans threw stones at and set fire to a bus carrying fans from the Greek club PAOK, Croatian police said Tuesday according to dpa. Police said that a group of 30 people, most likely Dinamo Zagreb fans, stoned the bus and set it ablaze with Molotov cocktail. PAOK and Dinamo Zagreb are set to play in a Europe League match on Wednesday. On Sunday, a bus with Partizan Belgrade basketball players was stoned in Adriatic city of Zadar, and a Partizan coach was injured.