Stabbing is a very personal crime, anyone can just go shoot someone but stabbing, whoever did this wanted to inflict as much pain as possible, might be an MS13 connection, my guess its a drug connection, who calls someone 20 times in the middle of the night unless its to get some crack
These kids all looked pretty healthy, so I’d be surprised if they were habitual drug users of anything stronger than marijuana. I’m sure autopsies would have revealed the presence of drugs, and police would have noticed any drug paraphernalia or residue. But it’s possible that they did find evidence of drug use and are keeping that quiet for the time being.