TILTON, N.H. - A celebration of life service will be held Monday night to pay tribute to a former police chief who was killed in a shooting at a hospital in New Hampshire.

Bradley Haas was working security at the New Hampshire State Hospital on Nov. 17 when a gunman opened fire in the lobby, killing him. Police said his actions saved lives. The gunman was then killed by a New Hampshire state trooper assigned to the hospital.

The celebration of life service will be held at a high school in Tilton.

Haas, 63, was an Army veteran and the former police chief of the Franklin Police Department. A vigil was held in Concord in honor of him on Nov. 20.