Police say they're investigating a clash at an asylum-seekers' home in eastern Germany in which 11 refugees and three police officers were injured.

Suhl police chief Wolfgang Nicolai told the dpa news agency Thursday his department had opened an investigation against unidentified suspects.

Some 120 police officers were called to the home housing some 1,800 refugees southwest of Erfurt late Wednesday. Police say one of the residents was attacked by a group of others for allegedly insulting the Quran by tearing pages from it.

Police say some 50 residents were involved and as many more watched the clash.

In addition to the people injured, police say six police vehicles were damaged and furniture was thrown out of broken windows.