Photos: Deadly shooting on I-10 shuts down freeway for hours

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By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland
By Catherine Holland By Catherine Holland

PHOENIX -- Police are trying to figure out what led to a deadly shooting on Interstate 10 in Phoenix that forced the closure of all westbound lanes between 43rd and 51st avenues for hours Friday morning.

Investigators say officers responded to a call of a shooting on the I-10 freeway just after 10 p.m. Thursday. The freeway was closed for more than nine hours while detectives conducted their investigation.

When police first arrived on the scene, they found Michael Arvallo, 49, shot to death. It's not yet clear if he was shot while in his truck or if he got out and was shot on the side of the road. His black pickup truck, which was in the median, had major front-end damage.

Investigators said evidence at the scene indicates that the victim was driving on the westbound off-ramp when he apparently lost control of his vehicle. The truck slammed into a light pole and the plowed through some bushes before coming to rest in that median. It's still not clear exactly when the driver was shot or what happened prior to the shooting.

The Department of Public Safety was assisting the Phoenix Police Department with the case.

The westbound lanes of Interstate 10 were closed between 43rd and 51st avenues for more than nine hours, wreaking havoc on the morning commute. While the eastbound lanes were open throughout the investigation, they were quite congested due to slowing near the scene.

Once investigators cleared the scene and reopened the freeway, traffic got moving again although the recovery was slow.

As for the homicide investigation, officers have more questions than answers as they try to piece everything together. They have not said if they believe road rage might have played a role in the incident. At this point, they simply don't know what happened.

With no suspect or suspect vehicle description, detectives say they have very few leads in the case.

Anyone who may have been in the area and saw anything is urged to call the Phoenix Police Department at 602-262-6141. You also can call Silent Witness at either 480-WITNESS or 480-TESTIGO.