A 23-year-old man, most recently of Bethel and Windham, has been charged with murder in the Feb. 20 death of Scott Libby of Raymond, whose body was found in his car along the train tracks in Bethel.

Agostino Samson was arrested without incident just after noon Wednesday at his grandparents’ house in Windham, said Lt. Brian McDonough of the Maine State Police. He is now at Oxford County Jail, and is scheduled to make his initial court appearance tomorrow morning, he said.

Samson had known Libby, 25, for seven years and had worked for Libby’s landscaping business, McDonough said. After the initial investigation showed Libby’s injuries to be inconsistent with a low-speed train collision, investigators looked into why Libby was in Bethel, and found that he had met with Samson, he said.

The Medical Examiner’s Office determined the cause of death to be multiple traumatic injuries to the head, and the manner to be homicide, McDonough said. Investigators believe the actions leading up to the homicide occurred in a different spot from where Libby’s body was found, and that Samson moved Libby’s body and car to the tracks, he said.