A 48-year-old Auburn woman died at Harborview Medical Center three days after she suffered severe injuries in a single-vehicle motorcycle collision on Sept. 2 in Seattle.

The collision resulted in the hospitalizations of Therecilla Casino Allen, 48, of Auburn — a passenger on the motorcycle — and the driver, a 53-year-old Auburn man.

Harborview Medical Center staff declared Allen deceased on Sept. 5, according to Susan Gregg, media relations director for UW Medicine.

Allen died as a result of multiple factors including anoxic encephalopathy (an injury to the brain resulting in loss of blood flow to brain tissue); skull, facial bone, and multiple rib and left scapular fractures; subdural and subarachnoid hemorrhaging in the brain; and blunt force injury of head and torso leading to pulmonary contusions, according to the King County Medical Examiner’s Office.

The King County Medical Examiner’s Office identified Allen’s death as an accident.

According to an updated Sept. 9 news release from the Washington State Patrol, the motorcycle struck a puddle of water traveling northbound on Interstate 5 at the convention center, flipping and ejecting both riders.

The motorcycle arrived at a stop on the right shoulder.

First responders transported Allen and the driver to Harborview Medical Center in Seattle for injuries suffered in the collision.

The collision resulted in roadway blockages for 2 hours and 16 minutes.

The Washington State Patrol’s investigation into the cause of the collision continues.