PHOENIX -- Police have arrested a man in connection with the fatal shooting of a photo-radar van operator Sunday night, according to the Phoenix Police Department.

According to department spokesman Sgt. Andy Hill, the department and the Arizona Department of Public Safety will hold a joint news conference Monday afternoon to announce more details of the arrest.

Video footage over the noon hour showed police serving search warrants at a Phoenix home in connection with the shooting. Footage showed a vehicle similiar to the one captured by the radar van's tape parked by the side of the house.

In the meantime, photo-radar vans have been yanked off Arizona highways as DPS and Phoenix police investigate the shooting, according to Redflex Traffic Systems Inc. CEO Karen Finley.

The 911 call came into DPS at 8:52 p.m. Sunday.

DPS said the driver, Doug Georgianni, 51, was shot multiple times while sitting in the marked van parked on the eastbound side of Loop 101.

Georgianni was taken to John C. Lincoln Hospital, where he was pronounced dead, DPS said.

DPS said Georgianni had been working for RedFlex Traffic Systems Inc. as a driver technician for three months. RedFlex is under contract with DPS to operate the photo-radar systems, which are used to catch speeders and red-light runners.

"The entire Redflex family is grief-stricken for Doug and his loved ones," Finley said. "We will continue to dedicate every resource to work with the police to help identify and apprehend the person who took Doug's life.

Phoenix police described the shooter as a white male in his 60s with a thin face, unkempt white hair and a white mustache.

He was driving a two-toned white and gray 1980s-model Chevy Suburban with black rims and tires and a roof rack, police said. Investigators believe the shooter left the crime scene traveling south on Seventh Street.

Police are asking anyone with information to call Silent Witness at 480-948-6377.

Reporter Omadelle Nelson contributed to this story.

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