PITTSFIELD — A third suspect has been charged with murder in the Jan. 20 shooting death of a Dalton man.

Dasean Smith, 21, of Pittsfield, was ordered held without bail on Monday after his arraignment in Berkshire Superior Court. He was was arrested Friday on a warrant on his new charges, including murder. Picking up the new charges might have violated Smith's probation conditions from a 2016 assault and battery and strangulation case.

Two Pittsfield brothers — Carlos Pascual-Polanco, 19, and Chiry, 22 — already are in custody in connection with the slaying.

Police believe the victim, Jaden Salois, was killed after being lured into an ambush by the suspects. Salois, 18, of Dalton, was found on Edward Avenue around 2:13 a.m. with a single gunshot wound to his chest.

Details of Smith's alleged role in the slaying were unclear Monday afternoon, but his name appears several times in the probable cause report used to secure the arrest warrant for the brothers.

Smith and the brothers were captured on surveillance video at the Blandford rest area on the Massachusetts Turnpike on Jan. 19 — about 10 hours prior to Salois' death — in the Honda CRV suspected of being used during the shooting.

A witness also said they saw Smith in the vehicle with Carlos Pascual-Polanco several hours after the shooting, and they said they saw a black handgun on the center console.

Salois was apparently lured out in the early morning hours of Jan. 20, under the guise of a marijuana deal, set up through a Facebook account under the name "Jack Herrer."

"The 'Jack Herrer,' account was clearly used to set up and lure Salois out immediately prior to the murder," according to court files.

Smith was the owner of the account, investigators said, but that Carlos Pascual-Polanco also was involved in its use.

Salois' cellphone showed the account was communicating with him just prior to his death, and investigators determined the user of that account was in the CRV the night of the slaying.

The interior of the CRV tested positive for gunshot residue, investigators said.

The brothers were arrested in April and have each pleaded not guilty to one count of murder. The also are being held without bail.

They have been indicted by a Berkshire County grand jury and are expected to be arraigned in Berkshire Superior Court in the near future.

Smith pleaded not guilty in Berkshire Superior Court on Monday to charges of murder, illegal weapons and ammunition possession and using a firearm during the commission of a felony.

Judge Mark Mason ordered him held without bail. Smith is due back in court Dec. 9 for a pretrial hearing.

Smith's attorney, Jeffrey Brown, asked Mason to recommend his client be held in pretrial detention in Franklin County, to be closer to his Greenfield office and amid unspecified threats Smith has allegedly received from the two co-defendants in the case.

Mason said he would pass along the recommendation.

If convicted on the murder charge, each defendant faces life in prison without the possibility of parole.

"The Berkshire District Attorney's Office appreciated the hard work and ongoing efforts by members of the Pittsfield Police Department in this case, and sends sincere condolences to the family and friends of Mr. Salois," said Berkshire District Attorney Andrea Harrington in a prepared statement.

Bob Dunn can be reached at bdunn@berkshireeagle.com, at @BobDunn413 on Twitter and 413-496-6249.

Dasean Smith was arrested on a warrant on his new charges. An earlier version of this story misstated what spurred the warrant.