(Image: Seattle Fire)

A man was killed early Wednesday morning in a three-vehicle collision involving an ambulance on First Hill.

According to Seattle Fire reports and SPD radio dispatches, the ambulance was struck around 12:15 AM near Boren and James as it was turning into a medical facility with its patient onboard.

The male driver of a Prius involved in the collision died at the scene. Five people in the ambulance were not injured in the crash. Another ambulance from private carrier AMR was dispatched to complete the transfer of the patient.

UPDATE: SPD has posted a preliminary report on the incident and says the driver of the third vehicle showed signs of impairment was taken into custody for investigation of vehicular homicide:

Detectives are conducting their investigation of a fatality collision that occurred shortly after midnight at Boren Avenue and James Street.  One person was pronounced dead at the scene and another person is in custody.

At approximately 12:15 am, an Acura sedan was travelling at a high rate of speed westbound on James Street when it collided with a Toyota Prius travelling southbound on Boren.  The impact from the collision caused both vehicles to collide with an AMR ambulance as it was slowing to stop at the intersection.  Seattle Police and Seattle Fire responded to the collision scene.

Sadly, the 60-year old male driver of the Prius was pronounced deceased at the scene.  The 27-year old male driver of the Acura displayed signs of impairment and was placed under arrest for Investigation of Vehicular Homicide.  He was transported to the hospital for treatment of minor injuries and will be booked into the King County Jail once he is released from the hospital.

The occupants of the ambulance, the AMR driver, a second AMR employee, two flight nurses and a patient were not injured as a result of the collision.

Detectives from the Traffic Collision Investigation Squad (TCIS) responded and will continue the investigation.  This remains an active and ongoing investigation.

SPD closed the street to investigation through the night as investigators recorded evidence and documented the scene. It was reopened to traffic early this morning.