SPD says a warrant suspect was injured on Capitol Hill after he fought with officers. From the SPD Blotter:
On May 29th at approximately 7:30 PM, officers went to the 1300 Block of Boren Avenue to arrest a suspect with an outstanding warrant. Officers contacted the man who proceeded to fight with the officers. The fight resulted in a large police response, and the officers were able to take the suspect into custody. Once in custody, the officers escorted the man down to the street where they were waiting for transportation to the hospital. While waiting, the man stopped breathing. Seattle Fire responded and was able to resuscitate the man. He was then transported to Harborview Medical Center for treatment. This is still an active investigation. None of the officers involved in the fight were injured.
CHS has a photo of the scene.