The widow of a retired police captain who died during a night of violent protests in St. Louis says he was trying to protect a friend’s pawn shop.

Authorities say the son of a Boston police captain plotted to detonate pressure-cooker bombs at an unidentified university in a terrorist act aimed at supporting the Islamic State group. 

Hundreds of additional mourners are expected this evening to join the colleagues and family members of a New York City police officer who was killed along with his partner in an ambush last weekend.