[PoisedWoman]

....I think a couple of goof balls trying to swindle some money via extortion...

But how would they know which phone booth to show up at unless they read or wrote the note?

[jpl]

But how would they know which phone booth to show up at unless they read or wrote the note?

I'll bet that these clowns probably were the ones that left the note. The assassins are not interesting in extorting money. If they were, they would have made this known some time ago.

[xsrdx]

But how would they know which phone booth to show up at unless they read or wrote the note?

They could have planted the note anywhere near the steakhouse based on news reports. The note may not have originated with the shooter.

[antivenom]

YES...it is possible that MULTIPLE messages were left...remember the police are guarding info...EXTORTIONISTS do appear in times like these...I think they (goofballs) left a note...and the Sniper left a Tarot Card...

[Howlin]

From what I can gather, the phone call that advised of the note was made from THAT phone booth.

This very well could be two different things.