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Rialto Police Department
Monday March 25th, 2024 :: 01:49 p.m. PDT

Advisory

Fatal Traffic Collision

Incident:         Fatal Traffic Collision

Date / Time:   March 23, 2024 / 2:29 a.m.

Location:        4000 block of South Riverside Avenue, Rialto, CA                              92376
Case:              932403139
Victim:            Gregory McDonald, 57-year-old                                                            male, resident of Moreno Valley
Suspect:         Marcus Fiorillo, 27-year-old                                                                  male, resident of Banning
Information: 

On Saturday, March 23, 2024, at 2:29 a.m., Rialto Police Department Communications Center along with Colton Police Department received the report of a two-vehicle collision, with one of the parties injured. Officers from both police agencies, along with Colton Fire Department Paramedics arrived on scene minutes later.  Officers located Gregory McDonald, the driver of a Toyota Echo suffering from life threatening injuries. McDonald was pronounced deceased on scene at 2:44 a.m. Marcus Fiorillo was determined to be the driver of a Ford F-150 pickup truck and sustained no injuries during the collision.  
                   
The Rialto Police Department Major Accident Investigation Team and the Office of Traffic Safety Unit of the San Bernardino County District Attorney’s Office responded to the scene and conducted the investigation. The initial investigation indicates Fiorillo was traveling north on Riverside Ave and collided with the east guard rail. Following the initial collision Fiorillo swerved into southbound lanes, and collided head-on into McDonald’s vehicle. The investigation is ongoing but there is evidence Fiorillo was under the influence of alcohol when the collision occurred. Marcus Fiorillo was arrested at the scene and booked into the West Valley Detention Center.
 
On March 25, 2024, the Office of Traffic Safety Unit of the San Bernardino County District Attorney’s Office filed the felony charge of Second Degree Murder. Fiorillo will be held in custody pending his court appearance. 
 
Anyone who may have information about this incident can contact Traffic Sergeant Dan Smith at (909) 644-6025 or [email protected]. Witnesses can also anonymously report information through WeTip at (800) 782-7463, reference case #932403139.

 

Address/Location
Rialto Police Department
128 N Willow Ave
Rialto, CA 92376

Contact
Emergency: 9-1-1
Non-emergencies: 909-820-2550

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