A Chillicothe teen-ager was certified as an adult and charged Monday with first-degree assault involving a juvenile victim.

A Chillicothe teen-ager was certified as an adult and charged Monday with first-degree assault involving a juvenile victim. Matthew Ryan Miller, whose date of birth is listed as 2002, is accused of knowingly causing serious physical injury to a male juvenile by striking him over the head with a rock, causing injuries to his hand and fingers, causing a contusion to his neck and a laceration to the top of his head. The charge was filed by Livingston County Prosecuting Attorney Adam Warren. Miller currently is incarcerated at Daviess DeKalb Regional Jail with bond set at $50,000 cash only. The assault allegedly occurred the evening of Feb. 2, 2018, at the railroad bridge south of LIV 238 in Livingston County. The statement of probable cause filed by local authorities, states that the victim met with friends at a local restaurant and the three walked down the railroad tracks to the bridge where the alleged assault had occurred. The victim was allegedly choked by the other two individuals using a small rope around his neck. The victim tried to escape and the two attackers started to wrap his legs and wrists with tape so he couldn’t go anywhere. The victim allegedly made a deal with the attackers to kill someone they “hated worst” and the attackers then freed the victim by cutting the tape with a knife. The three then walked to one of their houses where the victim called a family member and was taken to the hospital for treatment of his injuries. During the incident, at least one of the attackers allegedly threatened to stab the victim with a knife. Authorities investigating the site of the attack located tape, baler twine rope, a jacket, a knife, latex gloves and a large rock that contained a spot of what appeared to be blood on the corner of it.