Pedro Genoa, 17, of 137 Meadowbrook Lane, a junior at Fitchburg High School, died at UMass Medical Center in Worcester after suffering several injuries, including a gunshot wound to the abdomen.
Nelson Geraldino, 18, of 15 Crestview Lane, was stabbed multiple times and died at HealthAlliance Hospital/Leominster.
Genoa's brother, Ronny Genoa, 18, of 137 Meadowbrook Lane, who graduated from Montachusett Regional Technical High School in Fitchburg this year, suffered multiple gunshot wounds, Early's office said. He was in UMass Medical Center, but his condition was not available Monday evening. Early's office said he was in stable condition Sunday.
Orville Carrion, 22, and Jose Carrion, 27, both of 96 Mechanic St., Unit 3, were treated and released at HealthAlliance Hospital/Leominster, then charged with murder.
Ronny Genoa is charged with assault with intent to murder and mayhem.
All three men were held without bail.
The Carrions are scheduled for arraignment at Fitchburg District Court today.