Ambler's current location is unknown or hasn't been announced by authorities.
Plainfield Police say they responded to 119th Street, west of Van Dyke Road, at 8:24 a.m. and met with the victim, who was on a relative's property when a subject requested a ride and subsequently produced a handgun and demanded his vehicle.
Ambler, who had been in a relationship with the mother, entered an unlocked home in Compton in rural Lee County on August 26, while "wearing a hood, robe or mask". He was freed on $250,000 bond. Based on these newly developed leads, the Plainfield search was concluded, however the investigation remains active.
Based on the possibility of the subject still being in the area, local schools were placed into soft lockdowns.
Police say the semi Ambler allegedly stole was found unoccupied on Normantown Rd. north of 119th St.
The search included K-9's, officers in vehicles and on foot, as well as an aerial search. Police continue Wednesday to search for Ambler, who is consider him armed and risky with a 4- caliber, semi-automatic handgun.
Anyone who sees Ambler is asked to call 911, police said. All students were dismissed at 2:30 p.m. Residents within a 1/2-mile radius of the intersection were also asked to remain inside their homes.
He is considered unsafe.
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WSPY will bring you more information as it becomes available. It also resulted in special security measures being taken at Crone and Scullen middle school and Peterson Elementary School and in Naperville, all within three miles of Plainfield North.
Naperville police joined the search Wednesday for a former LaSalle County sheriff's deputy charged with home invasion and aggravated kidnapping who was believed to be in the Plainfield/Naperville area.
A manhunt for Ambler ended Tuesday evening after authorities said they believed he was no longer in the area.
Ambler was arrested September 15 and charged with home invasion and aggravated kidnapping, both of which carry six to 30 years in prison.
Ambler confined the woman against her will, which caused bruising from the taping of her hands. He is wanted in both Lee and LaSalle Counties.
A warrant was issued for his arrest after he contacted the girl's mother on Sunday, Simonton said.
He did confirm that the warrant issued for arrest will petition to increase or revoke Ambler's bond, upon his arrest.