Courthouse shooter may have had help

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Dover, Del. • Authorities who uncovered a small arsenal kept by a onetime police officer who killed his former daughter-in-law and another woman at a Delaware courthouse said in a search warrant affidavit that investigators suspect the gunman's wife and son of helping to plot the slaying.

Monday's killings were the culmination of a bitter, years-long custody battle involving the slain woman and the gunman's son.

Delaware State Police said Thomas Matusiewicz, 68, walked into the New Castle County Courthouse in Wilmington on Monday and shot and killed Christine Belford, 39, and her friend Laura Mulford, 47, before taking his own life.