(WSB photos)

7:01 PM: Emergency responders are arriving in the 8100 block of 31st SW [map], where someone is reported to have been shot, according to scanner traffic. Police are reported to be looking for a suspect. More to come.

7:14 PM: According to radio transmissions, a black Jetta might have taken someone away from the scene, headed south from 31st. The victim, a man around 25-30 years old, with at least two gunshot wounds, was said to be undergoing CPR.

7:27 PM: SFD confirms that the victim has been declared dead at the scene. That would make this the fourth homicide investigation of the year in West Seattle, less than two weeks after the third.

7:55 PM: Homicide Unit detectives have arrived, our crew reports, as has citywide media. Police say they are looking for one suspect, but no description has been made public.

9:15 PM: We are back at the scene, where Det. Mark Jamieson has just briefed media. No arrest, no description – the killer is believed to have fled on foot and then gotten into the aforementioned car. The victim was found in the street, and evidence – shell casing(s), we learned earlier – indicates he was shot there, but there’s no info about whether he lived in the area. Police are expected to be on scene at least a few more hours. 31st is blocked at Thistle on the south.

WEDNESDAY AFTERNOON: One suspect is in jail, another is being sought, police tell us. We’ve started a new story here.