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BEAR, Del.— Four boys ranging in age from 12 to 14 have been charged with kidnapping and raping a girl in Delaware last month, police announced Friday.

New Castle County Police said in a statement that officers called to a community in Bear on Dec. 11 learned the boys forced the girl into a home and raped her. They say two boys also threatened her with a weapon, warning her not to tell anyone.

All four boys are charged with first-degree rape, first-degree kidnapping and conspiracy. One boy was also charged with possession of a deadly weapon while committing a felony, aggravated menacing, endangering the welfare of a child and other offenses. The Associated Press doesn't normally identify juveniles accused of crimes.

Police say detectives are concerned there may be more victims.