Mass Casualty: Emergency radio traffic after 9 shot in the Nation's Capital. Four dead in Tuesday night shootings.

DC Fire &EMS Department audio above is provided by FireSceneAudio.com. There is also rather dramatic police radio traffic of the pursuit and crash. Click here: Part 1, Part 2, Part 3.

It was a deadly and chaotic Tuesday night in the District of Columbia. It centered around the shootings of 9 people in the area of South Capital Street and Galveston Street around 7:15 PM. In the initial transmissions you will hear that the DC Fire & EMS Department had a presumed DOA along with three others receiving CPR.

Four Metropolitan Police Department officers were injured in a collision just across the District line on St. Barnabas Road in Prince George’s County, Maryland.

Above is the initial radio traffic from fire and EMS crews along with links to hear the police radio transmissions posted to the Internet. Below is the story filed last night by WUSA9.com‘s Gary Nurenberg.