A driver behind the two vehicles involved in the incident captures another driver in a grey sedan tossing a cup onto a black SUV driving in the next lane. Liquid is seen splashing out.
A short time later the sedan is on the other side of the black SUV, and it appears its driver leans out of the window and shoots pepper spray at the SUV.
Moments later a shot is fired at the SUV.
The grey sedan then speeds onto the Washington Boulevard off-ramp and vanishes from view.
The driver of the black SUV later discovers a bullet hole near the right rear tire. Investigators believe the shooter's vehicle is a recent model grey Nissan Maxima.
The incident occurred May 3 at about 5:40 p.m. on the northbound 605 between Slauson Avenue and Washington Boulevard, according to CHP.
Anyone with more information on the incident is urged to contact the CHP Santa Fe Springs office.