This would include officers who responded to incidents while off-duty as obligated by the Police Force Act 1967, as well as those commuting to and from their place of duty or training.
Uncoded entries refer to cases whereby incident details are unknown or unclear: Key — denotes information is not available.
denotes the officer was killed (Murder or Culpable homicide) using firearms/explosions (including booby trap, grenades, etc).
denotes the officer was killed (Murder or Culpable homicide) via other means (or where the exact weapon used, if any, was not specified).
denotes the officer's death was attributed to natural causes/act of God The Straits Times 14 July 1949 carried the news on page 5.