Blake Rubin, a Worcester defense attorney who ran for Worcester District Attorney last year, and Fabian Beltran, a defendant Rubin represented who was convicted of human trafficking after a trial last year, have been indicted and accused of witness intimidation.

Another attorney, Angela Cavanaugh, has also been indicted. Cavanaugh represented a witness in Beltran’s case, which was connected to the Kilby Street gang in Worcester. Gang members were accused of taking advantage of women’s heroin addiction by forcing them into prostitution and withholding money paid for sex acts, instead giving the women drugs.

Indictments against the three were handed up on Dec. 19 by a statewide grand jury in Suffolk Superior Court and have been transferred to Worcester County. The indictments accuse the three of engaging in witness intimidation and conspiracy on May 26, 2018. Further details of the allegations are not yet clear.

Rubin and Cavanaugh are slated to be arraigned in Worcester Superior Court on Friday. An arraignment date for Beltran has not yet been scheduled, and it is not clear if Beltran has an attorney.

Reached by phone Tuesday afternoon, Rubin said he could not comment on the charges. Peter Ettenberg, a Worcester defense attorney who is representing Rubin on the new indictments, said it was too soon to comment on the case.

Neither Cavanaugh nor her attorney could be reached by phone Tuesday afternoon.

The case is being handled by the office of Plymouth District Attorney Timothy Cruz. A spokeswoman for Worcester District Attorney Joseph Early Jr. said the matter does not involve Early’s office.

Beltran was found guilty by a Worcester Superior Court jury last year of human trafficking and deriving support from a prostitute. Judge Daniel Wrenn sentenced Beltran to 6 to 8 years on the human trafficking charge and 4 to 5 years for the deriving support from a prostitute charge. The sentences run concurrently.

The victim in Beltran’s case testified that he took advantage of her drug addiction. In 2016, officials said Beltran was among Kilby Street gang members took the profits after forcing drug-addicted women into prostitution.

Beltran was also accused of witness intimidation for allegedly arraigning bail for a witness who was slated to testify against him during his trial.

Court documents in Beltran’s witness intimidation case indicate that on May 26, 2018, Beltran recruited several people to arrange bail for a witness who was scheduled to testify for the commonwealth in the human trafficking case.

“Beltran gave the witness an amount of heroin, rock cocaine, and US currency to assist her in getting to the state of Maine where Beltran wanted her to stay until the case was closed,” court documents filed in Worcester District Court read. “Beltran told the witness that if she was in Maine, investigators would not be able to locate her and therefore she could not testify against him.”

But according to court testimony in the case published in the Telegram & Gazette in 2018, jailhouse calls suggested that the “lawyers involved in the case knew that the witness was being bailed” and would not appear in court for testimony."

“I am offended," Rubin responded at the time. “That kind of insinuation, your honor, quite frankly is probably politically motivated.”

On Jan. 9, 2019, a nolle prosequi was filed in Worcester District Court, stating the commonwealth no longer intended to proceed with the witness intimidation case in district court.

Rubin has represented clients in several high-profile cases in Worcester County, in both state and federal court. He is the lawyer for Momah Kamara, the man charged with second-degree murder, arson and burglary, accused of setting a Dec. 9, 2018, blaze that killed Worcester Firefighter Christopher Roy.