UPLAND, Calif. (KABC) — A wild motorcycle chase ended in a violent crash on the 210 Freeway in Upland Monday afternoon as the suspect was attempting to flee at extraordinary speeds after fatally shooting a sheriff’s deputy in Rancho Cucamonga.
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The chase ended after an off-duty sheriff’s deputy conducted a “legal intervention” and hit the suspect’s motorcycle.
San Bernardino County Sheriff’s deputies responded to a domestic violence call at the 12300 block of Hollyhock Drive in Rancho Cucamonga, just north of Victoria Gardens. The suspect immediately opened fire and struck Deputy Andrew Nunez in the head.
Deputy Nunez was rushed to the hospital and ultimately pronounced dead, the sheriff’s department confirmed.
The suspect then hopped on a motorcycle and a high-speed police chase ensued.
All eastbound lanes were shut down and a SigAlert was issued between Mountain and Campus avenues.
AIR7 video showed traffic backed up for miles as the traffic was at a standstill during peak rush hour traffic at 3 p.m.
Traffic was being diverted off of Mountain Avenue.
As of 5:25 p.m., the eastbound 210 Freeway was still shutdown. There is major police presence at the scene as the investigation is underway.
The suspect appeared to pull out a gun and waved it as he was driving down the freeway at high speeds of 150 mph.
Investigators were seen inspecting the gun that ended up on the floor of the 210 Freeway after the dramatic collision.
Investigators inspect what appears to be a gun on the 210 Freeway in Ontario, where a chase ended in a violent crash on Monday, Oct. 27, 2025.
During an afternoon press conference, Sheriff Shannon Dicus confirmed that an off-duty sheriff’s deputy conducted a “legal intervention” by striking the suspect on the motorcycle.
That’s when the suspect was launched into the air and landed on the road.
Officers quickly ran out of their patrol cars and rushed to handcuff him.
The suspect was sitting up and conscious as authorities rendered aid. He was airlifted to an area hospital in stable condition.
Authorities are working to positively identify the suspect forensically and waiting to interview him.
The suspect’s name was not immediately released.
After the suspect opened fire, he hopped on a motorcycle, sparking a high-speed chase that ended in a major crash on the 210 Freeway, officials confirmed.
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