Blayn Jiggetts and Jason Aquino—two of the three men implicated in the May 2009 Kirkland House shooting—have made an agreement with prosecutors to plead guilty to a lesser charge in exchange for cooperating with the district attorney’s office.

Originally charged with first-degree murder, Jiggetts and Aquino now face the lesser charge of manslaughter after agreeing to cooperate with Middlesex District Attorney Gerard T. Leone Jr. in the case against Jabrai Jordan Copney—who allegedly shot Justin Cosby—according to the Boston Globe.

Jiggetts and Aquino now face a maximum sentence of 20 years in jail after making the agreement with prosecutors.

Jiggetts took the stand Friday against Brittany J. Smith, a former Harvard student and Copney’s girlfriend at one point, at the Middlesex Superior Court, according to the Globe. During her arraignment last March, Smith pleaded not guilty to charges of accessory after the fact of murder and several other charges related to the shooting.

At the hearing, her defense attorney, John Osler, tried to get the court to throw out all criminal charges against her, according to the Globe.

Smith originally signed a non-prosecution agreement in exchange for agreeing to divulge everything she knew about the shooting. According to the Globe, prosecutors allege that Smith withheld information related to the case and therefore reneged on her agreement.

—Check thecrimson.com for updates as this story develops.

—Staff writer Hana N. Rouse can be reached hrouse@college.harvard.edu.

—Staff writer Xi Yu can be reached at xyu@college.harvard.edu