Suicide?
In a way, sure. As innocent bystanders don't typically wind up with their feet in five-gallon buckets of cement, I'd guess the late Petey "Crack" Martinez made a conscious decision to piss off the wrong people thereby ensuring his demise. I'd also bet that Mr. Crack knew full well the consequences of pissing off such people.
A little more dramatic and drawn-out but not really much different than putting a gun to his own head.
Suicide?
That’s unlikely. Looks like the perp stole
more cement that he could swim with.