Complex sentence: Later the police in teams of 6 to 8 men killed the Jews by machine gun fire, on other hand, during later investigation some guards of camp denied participation of police and said that execution was done by camp personnel.
Split into simpler sentences: Later the police, in teams of 6 to 8 men, killed the Jews by machine gun fire,. During later investigations, however, some guards of camp denied the participation of police and said that executions were done by camp personnel.