Motorcyclist, 36, dies in single-vehicle crash after striking curb in south Phoenix Saturday afternoon

What happened

A 36-year-old man died Saturday after a single-vehicle motorcycle crash in south Phoenix in which investigators say the rider lost control and struck a curb. The collision was reported shortly after 5 p.m. near 7th Avenue and Elwood Street. First responders found the rider in critical condition, and he was pronounced dead at the scene.

The man was identified as Justin M. Jacobs. Detectives said the crash remains under investigation.

What investigators have said so far

Early details indicate the motorcycle left its intended path of travel and hit a curb, a sequence that often results in abrupt instability, loss of traction, or ejection depending on speed, angle of impact, and roadway conditions. Investigators have not publicly detailed the specific roadway configuration at the crash location, whether the rider was traveling straight or negotiating a turn, or whether any mechanical issues were suspected.

No additional vehicles were described as being involved in this collision. Authorities have not released information on whether impairment, distraction, or a medical event may have played a role, and they have not announced any enforcement action connected to the case.

Information that has not been released

• Whether Jacobs was wearing a helmet or other protective gear at the time of the crash.

• Whether speed was identified as a contributing factor.

• Whether roadway conditions (lighting, debris, surface damage, or weather) affected control.

• Whether toxicology testing will be conducted and, if so, when results may be available.

How fatal motorcycle investigations typically proceed

In single-vehicle fatal crashes, investigators commonly document the crash scene, measure and photograph tire marks and impact points, and review any nearby surveillance footage or driver-recorded video. They may also inspect the motorcycle for signs of mechanical failure and reconstruct the rider’s path prior to impact. When a rider dies at the scene, investigators may rely heavily on physical evidence, witness accounts, and any available video to determine the most likely sequence of events.

The fatal crash investigation remains open as detectives work to establish the circumstances that led to the rider losing control.

What to watch next

Further updates are expected if investigators identify contributing factors, confirm whether the rider used safety equipment, or determine that road design or surface conditions were relevant. Any additional information released by authorities could clarify how the motorcycle came into contact with the curb and why the loss of control occurred at that location.