Man assaults officer with key, police are puzzled

Federal agents revived the hunt for the remains of Jimmy Hoffa, executing a search warrant, "based on information that we have involving the disappearance of Jimmy Hoffa"

For law enforcement, social networking is proving to be a useful investigative tool, especially in catching criminals who think nobody is watching

Federal authorities raided 14 franchise stores while ICE agents were executing search warrants at about 30 other stores across the country

Officials from the Occupational Safety and Health Administration will begin work when the CF Industries facility is deemed safe