A 12-year-old boy visiting from New Jersey and his father were gunned down in a Montebello backyard Saturday night.

The attack outside a home in the 100 block of East Madison in Montebello occurred at a graduation party for the resident’s blind daughter. In all four people were shot. The father and son were killed and two others suffered gunshot wounds.

A resident of the home, Maria Soto, said the attack occurred about 9:50 P.m. Saturday night as 70 people gathered in the backyard to celebrate her daughter Rosemary’s graduation from High School.

“I heard somebody shout, they shot him,” Soto said. “And when I walked out in the backyard there was my nephew with the child in his arms.”

Party goers took the mortally wounded boy, identified as “Albert” from New Jersey and his father “Jay” of Ontario to nearby Beverly Hospital where both were pronounced dead.

Monday morning, Albert’s blood still stained the dirt surrounding a small rose bush in Soto’s backyard.