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.
Report: Obamas to attend service for shooting victims
President Obama and the First Lady are expected to attend a memorial service for victims of the Washington Yard shooting on Monday, according to Washington Post reporter David Nakamura.
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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.