Reports say a Police officer has been killed and another seriously injured after a car rammed into the US Capitol complex.
The vehicle crashed into a security fence before the driver lunged towards the officers with a knife.
According to the report, the officers then opened fire and the suspect, who has not be identified was shot dead.
The acting Chief of Police in Washington DC in a Press conference said the attack did not appear to be related to terrorism.
However, the exact circumstances of the Officer’s death are not yet clear.
Meanwhile there is an increased security presence around the Capitol building where the US congress sits and a number of Police cars surrounding the area.