Tip leads to arrest in deadly shooting at Scottsdale medical complex

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By Catherine Holland By Catherine Holland

SCOTTSDALE, Ariz. -- A citizen's tip led to the arrest of a man wanted in connection with a deadly shooting at a Scottsdale medical complex earlier this week.

As they investigated the shooting, police said they were looking for a 2001 silver Chevy Malibu with the Arizona license plate ARG1490. The vehicle belonged to the victim and was taken right after he was killed.

After information about the car was shown on TV, detectives got a tip that it was in the parking lot of a Phoenix apartment complex in the area of Interstate 17 and Georgia Avenue, which is south of Missouri Avenue.

Officers set up surveillance and watched as suspect, now identified as Joseph Robert Castillion, moved the car to a parking spot on the south side of Georgia Avenue west of 27th Avenue early Wednesday morning. Police approached him as he got out of the car.

Castillion ran from the officers, throwing away several things, including the victim's car keys and backpack, as he went.

Police caught up with him in the parking lot of a nearby apartment complex and took him into custody after a brief struggle.

When investigators searched the backpack Castillion, 19, tossed as he ran, they discovered a handgun they believe was used to shoot and kill Reynaldo Cruz Ramos, 45, early Tuesday morning. Ramos was a custodian working at the medical complex.

Police have not yet determined how Castillion and Ramos might be connected nor have they figured out a motive for the deadly shooting. Investigators have not released any other information about their suspect.

Castillion was booked on charges of first-degrees murder, armed robbery, auto theft, aggravated assault on an officer and resisting arrest.