Police in western Poland say that eight people, including one German, have been injured in an explosion of fireworks at a market on the border with Germany.

Spokesman for the police in Gryfino, Bogumil Prostak, said Tuesday the explosion took place at 12:50 p.m. (10:50 GMT) at a fireworks stand in the village of Osinow Dolny, Poland's westernmost settlement, where Germans also shop.

Eight people were hospitalized and six cars have been damaged.

"Damage is considerable," Prostak told The Associated Press.

The police and prosecutors are investigating to determine the cause of the blast.