Call for Navy security review
US politicians are calling for a review into how the suspected gunman in Monday's rampage at the Washington Navy Yard received and maintained a security clearance, despite a history of violent episodes.
FBI: Deceased Washington gunman acted alone
The FBI have confirmed that Aaron Alexis, the gunman responsible for killing 12 people at the US Navy base in Washington DC, acted alone. A FBI spokeswoman said:
"We believe at this time that the deceased shooter, Aaron Alexis, acted alone. As such with no other suspects at large, the investigation has moved into a stage of evidence retrieval."
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Security clearance questions over Washington gunman
Despite having serious mental health problems and previous incidents with firearms, Aaron Alexis held security clearance for the Navy base.
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FBI probes fatal shooting at Washington Navy shipyard
At least 13 people, including the suspected gunman, have been killed in a shooting at a Navy base in Washington DC.