A 30-year-old Pasco man was jailed Tuesday for allegedly threatening and assaulting his fiancee after accusing her of cheating, authorities said.

Christopher Scott Eubanks reportedly became enraged over the weekend when he got a call from his fiancee's ex-boyfriend who claimed to have had sex with the victim, said Benton County sheriff's Deputy Joe Lusignan.

Eubanks was driving in his truck with the victim and began hitting her while he drove and threatened to take her to a remote area, Lusignan said.

The victim feared for her safety, and they started fighting in the truck, he said. At one point, she pulled out a folding knife to protect herself and Eubanks was cut on the neck, Lusignan said.

The victim was able to run away when Eubanks stopped the truck on Weber Road south of Badger Road. He then got out and ran into an orchard, but eventually was tracked down by a police dog unit, Lusignan said.

Eubanks was taken to Kadlec Regional Medical Center in Richland, where he was kept under guard while being treated. He was booked Tuesday into the Benton County jail on suspicion of first-degree kidnapping, felony harassment and fourth-degree domestic violence assault.