A Suffolk Superior Court jury today found Oscar Rosa, 21, of Natick, guilty of second-degree murder in the Nov. 26, 2006 stabbing of Craig Viera outside the Embassy Club the Suffolk County District Attorney's office reports.

Rosa was sentenced to life in prison, but will be eligible for parole after 15 years.

Prosecutors alleged that Rosa and his pals were ejected from the club after Rosa had been restrained twice for causing trouble. Viera, the club's head of security, went outside the Lansdowne Street club and attempted to quiet the group down by offering them free admission the following weekend. Instead, prosecutors say, Rosa lunged at Viera, a Framingham resident, and stabbed him in the abdomen, leaving him with a liver injury that led to his death two weeks later from blood clots that formed in his lungs.

Rosa's attorney argued that Viera, a bodybuilder, actually died from steroid abuse.

Stabbing victim remembered.