Warrant: Son, wife also suspects in Del. court shooting

DOVER, Del. (AP) — A warrant to search the home of a Texas man who killed his former daughter-in-law and another woman at a Delaware courthouse shows that investigators suspect the gunman's wife and son of helping to plot the slaying.

The killings were the culmination of a bitter, years-long custody battle involving the slain woman and the gunman's son. The gunman, Thomas Matusiewicz, had previously complained that his family wasn't getting justice in a lawsuit that she filed against them over the kidnapping of the pair's daughters.

Matusiewicz complained in a 2011 letter to a Delaware Superior Court judge that he and his family had no money to defend themselves in a lawsuit filed by Christine Belford after her ex-husband, David Matusiewicz, kidnapped the couple's three daughters and took them to Central America.

At the time Thomas Matusiewicz and his wife wrote the letter in August 2011, their son was serving time in federal prison for kidnapping and fraud.