Updated

Mourners will gather to remember a Virginia state trooper who was killed by a gunman at a Richmond Greyhound bus station.

A funeral for Trooper Chad P. Dermyer will be held Tuesday at 11 a.m. Tuesday at Liberty Baptist Church in Hampton. A private burial will follow in Gloucester County.

Authorities say Dermyer was fatally shot by James Brown III at the busy bus terminal, where police were holding a counterterrorism training exercise. Brown, of Aurora, Illinois, was killed by two other state troopers after he opened fire.

Police haven't said what they believe motivated the shooting.

The slain trooper is survived by his wife and two children. He was a former Marine who previously served on police forces in Jackson, Michigan, and Newport News, Virginia.