DC metro worker dies as gunman fires at commuters

Key Facts

Image source, Getty Images Image caption, Police said employees and commuters were able to disarm the gunman A transport worker was killed after trying to stop a gunman from shooting commuters in Washington DC on Wednesday morning, authorities said.
The attack started on a city bus and ended on the platform of a Metro station in south-east Washington, police said.
In a statement on Wednesday, the Washington Metropolitan Area Transit Authority said it mourned the loss of a "heroic employee, Robert Cunningham, who intervened on behalf of a customer" at Potomac Avenue Station.
It said Mr Cunningham, 64, worked as a mechanic in the transit authority's power department and was "a victim of senseless gun violence".