Jhovanny Martes-Rosario, 48, who worked as chief of staff to Lawrence Mayor Brian DePeña, pleaded not guilty during his arraignment in Lawrence District Court. He had posted a bond of $1,050 after being booked at the Andover State Police Barracks following his arrest Monday evening.

An Essex County Superior Court jury found Emilio DeLarosa, 38, guilty of first-degree murder for the 2016 killing of Wanda Rosa. The jury found DeLarosa guilty of strangling Rosa in front of their 4-year-old son, who’d been lying in bed with his mother at their Methuen apartment.

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.

Adrian Isabel, 17, of Methuen surrendered to authorities on Tuesday afternoon. He was charged with murder in connection with the killing of Carlos Bello, 31, of Methuen.

The operator, identified as Kevin Casado, 23, of Haverhill, was transferred to Lawrence General Hospital, where he later died.

At about 2:06 a.m., the Methuen Police Department responded to reports of shots fired in the Haverhill Street area of the city.

The Office of the Chief Medical Examiner confirmed the body was that of Michael Gray, 31, of Peabody. Gray’s family reported him missing on Dec. 11.

“We will take any appropriate action, including consulting with other state and federal agencies, if appropriate,” Tucker said in a statement.

Vanessa Jeising, 28, was ordered held without bail following her arraignment in Peabody District Court. A not guilty plea was entered on her behalf for two felony charges: permitting substantial injuries to a child, and reckless endangerment of a child.

Derell Guy, 37, of Lynn was found guilty of first-degree murder on the theories of extreme atrocity and cruelty, and of felony murder. An Essex Superior Court jury sitting in Lawrence also convicted Guy of armed robbery.