In June 2000 a royal protection officer accidentally fired two shots on the royal train while the Queen and Duke of Edinburgh were on board.
The incident occurred in the early hours of the morning when the royals were asleep in another carriage.
In November 2008 one of Tony Blair's bodyguards accidentally fired his gun as the former prime minister prepared to board a flight at Ben Gurion airport in Israel.
No one was hurt in the incident, with the bullet hitting the ground.
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Police believe the 'vulnerable' two-week-old baby was being concealed to stop him going into local authority care.
A woman believed to be originally from north London was one of the nine people shot by Oregon college murderer Chris Harper-Mercer.
Detectives believe the boy's mother and family members are deliberately concealing the baby, and may be committing an offence.