
Police have not revealed a motive in the killing of 16-year-old victim Lee Manuel Viloria-Paulino, who was last seen alive on November 18.
His high school classmate, Matthew Borges, also 16, was arrested this weekend after Viloria-Paulino's body was found on a riverbank and will be charged with first-degree murder as an adult.
CCTV from a neighbour's house shows the pair leaving Viloria-Paulino's home and four men returning later without the victim, local media reports.

He said police arrested Borges on Saturday after officers searched his family home earlier in the day and found enough evidence to make an arrest.

The victim's headless body was found last Thursday by a woman walking her dog along the Merrimack River.His arms had been cut off near the elbows.
Boston Herald