A female pedestrian was killed early Wednesday in a hit-and-run involving an SUV in the Excelsior.

Reports of a woman down in the roadway on the 5000 block of Mission Street arrived around 2:50 a.m. today, as the Examiner reports. The woman, who has not been identified, was pronounced dead at the scene.

A witness to the collision is implied by the report, given the detail about the SUV, but no further details about the case have been released.

This fatal collision follows on a collision in Potrero Hill two weeks ago that took the life of a 77-year-old man. Jesus Ocampo was struck on November 2 at 16th and De Haro streets, and he succumbed to his injuries in the hospital last week, as SF Weekly reported.

The Excelsior collision marks the 27th person to die in a traffic-related incident in San Francisco this year to date, and the 18th pedestrian or cyclist to be killed.

In response to this year's traffic deaths, the Board of Supervisors last week declared a state of emergency on SF's streets, and the Board's Pedestrian Safety Advisory Committee on Tuesday approved a resolution to lower speed limits throughout San Francisco to 20 mph.