Hundreds gather Monday night at Old South Church in Farmington for a candlelight service for Capt. Michael Bell of the Farmington Fire Rescue Department, who was killed in an explosion that injured six other department members and a LEAP Inc. employee.

A prayer service and mass is conducted Monday evening at St. Joseph Catholic Church in Farmington following a building explosion that killed Capt. Michael Bell, 68, of the Farmington Fire Rescue Department and injured six other firefighters and an employee of LEAP.