Erin Bellanger, left, and her boyfriend Francisco Ayo Roman, shown in this 2003 family handout, were identified as two of six people found murdered,
Erin Bellanger, left, and her boyfriend Francisco Ayo Roman, shown in this 2003 family handout, were identified as two of six people found murdered, Friday, Aug. 6, 2004, at a home in Deltona, Fla. The raging attack was the culmination of events revolving around a nearby vacant home owned by Belanger's grandparents and used by squatters as a party house.

LOWELL -- The U.S. Supreme Court declined to consider an appeal on Monday from a death-row inmate who was involved in the 2004 killings of six people, including a former Lowell couple.

The Daytona Beach News-Journal reported on Monday that the U.S. Supreme Court rejected an appeal from Troy Victorino. Victorino had argued that he received insufficient assistance from his attorney during his Florida murder trial. The Florida Supreme Court unanimously rejected that argument in October 2013.

Six people were murdered in August 2004, when a group of men invaded a Deltona, Fla., house and bludgeoned those inside. Among the victims were Erin Belanger, then 22, and Francisco "Flaco" Ayo-Roman, then 30, both formerly of Lowell. Belanger's dog was stomped to death.

The case is known as "X-box murders" because it involved a dispute over Victorino's X-box video-game system and some other items. Prosecutors also said the group was seeking revenge because Belanger had evicted one of the group members from her grandmother's house.

Victorino, a gang member, was identified as the leader of the attack. Victorino was convicted on six counts of first-degree murder, along with other charges, in 2006, He received the death sentence.

Co-defendant Jerone Hunter was sentenced to death. Two others, Robert Anthony Cannon and Michael Salas, received life sentences.

Troy Victorino, 27, of Deltona, Fla., Robert Cannon, 18, of Orange City, Fla., Jerone Hunter, 18, of Deltona, and Michael Salas, 18, of Deltona, are shown
Troy Victorino, 27, of Deltona, Fla., Robert Cannon, 18, of Orange City, Fla., Jerone Hunter, 18, of Deltona, and Michael Salas, 18, of Deltona, are shown in booking mugs released by the Volusia County sheriff's department on Sunday, Aug. 8, 2004. The four were arrested and charged with first-degree murder and armed burglary in connection with the deaths of six people who were found in a Deltona home on Friday, Aug. 6, 2004.