Investigators are still trying to put together the story that led to the violence on Capitol Hill on Friday, which left two people dead including a US Capitol Police officer. One of two injured Capitol Police officers died after being hit by a suspect who then rammed their car into the north barricade of the Capitol complex Friday afternoon before exiting the vehicle with a knife. The suspect who was killed by Capitol Police has been identified as Noah Green, law enforcement sources told ABC News. Authorities are taking a close look at social media postings believed to be associated with Green. No clear motive has been established, sources said. “This attack, combined with the violent events of the January 6th insurrection, have left our officers reeling,” Union Chairman Gus Papathanasiou Officer said.