If you somehow suspected the shooting of three people at last night's piecemeal Last Thursday event was anything less than totally senseless, you're wrong.

Cops have charged the suspect, 16-year-old Turon Lamont Walker, Jr. with attempted murder and unlawful use of a weapon. They say bystanders helped them track the Vancouver resident down after the shooting, and that he's since admitted to the attack. The seriousness of those charges, under strict sentencing guidelines voters approved in 1994, means details of the case are being released (they're usually not with juvenile offenders).

So we can now say that, at least according to what police say he told them, Walker opened fire into a crowd because he felt someone was looking at him funny.

From a probable cause affidavit prosecutors filed today:

"Detective Brian Sims interviewed the defendant and after Miranda warnings the defendant admitted shooting the hand gun at an individual who he believed was "eying" him... The defendant then wrote an apology letter to the victims."

Cops are treating the shooting as a gang attack, though they've not released any description of Walker's alleged gang ties. (Police also say there have been 64 gang-related attacks this year. During 2012, the most violent year in recent memory, there'd been 57 through May.)

Walker was arraigned earlier today. So were two bystanders, local rapper Glenn Waco (Loren Ware) and Marcus Cooper, whose behavior immediately after the shooting landed them charges of interfering with a peace officer, harassment, and disorderly conduct. It's still not totally clear what happened to spur the arrests, but police are saying it's not that Cooper and Waco were trying to help victims, as has been claimed.

I've requested police reports and left a message for Waco. (The O has this account.)

Meanwhile, community members held a press conference at Woodlawn Park this afternoon, urging peace as violence spikes. Among the speakers was Kim Dixon McCleary, mother of 21-year-old Andreas Jones, who was killed in an attack in Gresham back in 2013.

"I represent a very real pain," Dixon McCleary said, as if speaking to teens who'd consider similar violence. "My son is not going to come back. That is not what you want to be part of. I’m appealing to you."