METHUEN — A second man has been arrested in connection with the fatal shooting of a Methuen man last weekend, Essex County District Attorney Paul F. Tucker and Methuen Police Chief Scott McNamara announced Thursday.

Kelvin Francisco-Perez, 22, of Lawrence was arrested Wednesday by Customs and Border Patrol agents and Port Authority Police while awaiting a flight at John F. Kennedy International Airport in New York City.

He was charged under a warrant with accessory after the fact (murder) and accessory after the fact (armed robbery).

Both charges relate to the killing early Sunday of Carlos Bello, who was shot in the Haverhill Street area of Methuen and later pronounced deceased at Lawrence General Hospital.

Adrian Isabel, 17, of Methuen was charged with murder after surrendering to authorities on Tuesday afternoon. A not guilty plea was entered during his arraignment on Wednesday in Lawrence District Court. Isabel is being held without bail.

Massachusetts officials plan to begin the process of extraditing Francisco-Perez from New York in the coming days.

The case has been investigated by troopers assigned to the Essex County District Attorney’s Office State Police Detective Unit, as well as detectives from the Methuen and Lawrence Police Departments.