Delaware courthouse gunman's son sentenced to life in prison

WILMINGTON, Del. -- A man whose ex-wife was gunned down by his father at a Delaware courthouse after a bitter custody battle has been sentenced to life in prison for cyberstalking.

David Matusiewicz was sentenced Thursday. His sister, Amy Gonzalez, is set to be sentenced later Thursday. Their mother, Lenore Matusiewicz, was sentenced to life in prison.

All were convicted of conspiracy and cyberstalking resulting in the 2013 death of David's ex-wife, Christine Belford.

Prosecutor Jamie McCall said in court that David Matusiewicz represents a danger to the community and to his and Belford's daughters.

Thomas Matusiewicz, David's father, fatally shot Belford and a friend as they arrived for a support hearing involving the daughters she had with David. Thomas Matusiewicz then traded gunfire with police before killing himself.