Detectives said a group had gathered to watch the L.A. Lakers game at a home near 14th Street and Colorado Avenue at about 8:30 p.m. Sunday when suspects in a mid-sized sedan opened fire.
Five people were hit, including 6-year-old Amarion Adams. Amarion died from his injuries on Wednesday morning at Loma Linda Medical Center.
"We don't want any more of our San Bernardino children killed. Murderers, you need to stop. You are taking children's lives, and this is senseless," said Amarion's aunt Donna Moreno during a Thursday press conference.
Police believe the shooting is gang related, and Amarion was simply in the wrong place when the shots were fired.
A 17-year-old gang member has been arrested in connection with the shooting, and now police are trying to track down 20-year-old Kenneth Scott.
"Both of our suspects are documented gang members. We believe the motive, probably stems from a previous confrontation that occurred between them and some rival gang members," said Lt. Jarrod Burguan of the San Bernardino Police Department.
Burguan said authorities do not believe any of the five victims were the intended targets.
Scott drives a silver Chevy Malibu, which matches the description of the vehicle the shots came from Sunday night. Police are asking residents across the region to be on the lookout for him.
"The truth is, he could be anywhere, but we don't think he's too far away," Burguan said, adding that Scott has connections in San Bernardino, Victorville and Adelanto.
For Amarion's family, the arrest of Scott and justice are the only things left to hope for.
"Please put yourself in our position if it were you. If it was your child, if it was your brother, your sister, your nephew, your cousin - just your friend," Moreno said. "Somebody has some more information. Please come forth and give it to us."
Anyone with information is urged to call the San Bernardino Police We-Tip Hotline at (909) 384-5656.