A motorcyclist was transported to the hospital without a pulse Friday, after he struck a minivan that allegedly made a left turn in his path.

According to the San Francisco Police Department, it was 9:42 p.m. Friday when a 52-year old motorcyclist rode west on 16th Street near Harrison Street.

Meanwhile, the 47-year-old driver of a minivan headed east on 16th. That driver turned left at Harrison, right in front of the motorcyclist.

Police say that "both vehicles collided." When officers arrived, the motorcyclist had no pulse, and was transported to San Francisco General Hospital with "life-threatening" injuries.

Bay City News reports that the cyclist was pronounced dead at SF General. According to the SFPD, no arrests were made following the collision, which is still under investigation.