About 150 FBI agents converged on the region Saturday morning, joining roughly 100 law enforcement officers from the U.S. Marshal's Service, Idaho State Police, Valley and Ada County sheriff's offices, the San Diego Sheriff's Department and other agencies, The Associated Press reported.
After the riders tipped off authhorities that the suspect might be in the remote area, located about 70 miles from Boise, DiMaggio's car was found covered in brush near Cascade on Friday, Gore said.
The blue Nissan Versa was found without license plates, but authorities were able to determine that the vehicle belonged to DiMaggio through its identification number, Gore said.
While police believed DiMaggio might have been armed with explosives and could have potentially use them to rig his vehicle or hideout, the Boise Police bomb squad did not find any explosive devices inside or near the car during their initial search Friday afternoon, Ada County Sheriff's spokesman Patrick Orr said.
Body of Ethan Anderson Identified
On Friday, the body of a child found in the Southern California home of murder and kidnapping suspect DiMaggio was positively identified as 8-year-old Ethan Anderson, who was previously thought to have been abducted, the San Diego County Sheriff's department said.
The boy's body was found after fire officials were called to put out a blaze at DiMaggio's home in Boulevard, Calif., and its detached garage at around 8 p.m. Aug. 4.
Inside one of the burned buildings, they found the body of the boy's mother, Christina Anderson, 44, police said.
Investigators found the badly burned body of a child while searching the scorched buildings, according to the sheriff's department, but officials did not confirm the body was Ethan until Friday night.
Authorities were able to identify the body after performing DNA analysis extracted through his bone marrow.
DiMaggio and Christina Anderson "were in a close platonic relationship," according to the sheriff's department, and officials said DiMaggio might have had an "unusual infatuation" with the teenage daughter.
The Associated Press contributed to this report.