On the 21st March 2002 Fr. Declan was shot dead together with his driver Patrick Longoli and his cook Fidelis Longole while travelling on their way home from a peace meeting within the territory of his mission.
Fr. Declan’s cause has been opened since October 2014 for Beatification by Most Rev. Dr. Giueppe Filippi, M.C.C.I, Bishop of Kotido, Uganda.