Officer dies after being stabbed outside Pentagon, officials say

• Suspect shot by law enforcement and dies at the scene
• Pentagon placed on temporary lockdown

An officer died after being stabbed on Tuesday during a brief outbreak of violence at a transit station outside the Pentagon, on the outskirts of Washington DC, and a suspect in the incident was shot by law enforcement and died at the scene, officials said.

The Pentagon, the headquarters of the US military, was temporarily placed on lockdown after gunshots were fired Tuesday morning near the entrance of the building.