GLENDALE, Ariz. -- Investigators have released photographs that might help identify the person involved in a bombing attack at a Glendale home early Wednesday morning.
The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) and the Glendale Police Department continue to investigate the bombing that occurred near 67th and Olive avenues just before 1 a.m.
An explosive device detonated in the driveway of the home. Glendale police said the device appears to have involved two pipe bombs.
Investigators believe that when one of the pipe bombs detonated, the blast propelled the other portion of the device in an undetonated state into the exterior wall of an unoccupied home across the street.
No one was injured as a result of the explosion, but investigators said the device had the potential to seriously injure or kill anybody near it when the blast occurred.
There was a home surveillance system in the area and authorities released images of the suspect and his vehicle.
"We are confident the public can assist in identifying the suspect that was captured on the video," said Fred Milanowski, assistant special agent in charge of ATF.
ATF officials said the pictures depict a lone individual kneeling down in the victims' driveway between the homeowners' cars. The suspect then initiates the Improvised Explosive Devices by means of a flame and is seen walking back to his SUV parked across the street.
The suspect appears to be a light-skinned male in his 30s or 40s with baldness near the crown of his head, wearing light-colored dress slacks, a dark-colored dress belt and a button-down dress shirt. The vehicle used in this incident may be a white, four-door, late 90's Chevy Suburban-type SUV.
This was the third incident involving an explosive device being placed near the home in the past 14 months. Investigators said the other two occasions involved similar IEDs.
"This was not a random event by any means," said Glendale police Sgt. Brent Coombs.
Investigators believe the people who live at the home, a couple and their adult daughter, are the targets of a deliberate and determined bomber, although at this point they are not sure why.
"To be honest we have more questions than answers right now," Milanowski said.
ATF is offering a $5,000 reward for information that leads to the arrest and conviction of the person responsible for the criminal bombing.
"We're doing everything we can to bring this guy into custody," Milanowski said.
Anyone with information is asked to call the Glendale Police Department at 623-930-3000.