I think there was a CELL PHONE left WITH the Tarot Card (real message from REAL sniper)...the POLICE have the disposable CELL PHONE...and the SNIPER has TOLD them...they better DAMN SIDE answer that PHONE when he calls them...
As for the GOOFBALLS...they left a note at the Cracker Barrel OR Blimpies...OR at the Texaco...and said..."Dear Mr. Policeman...This is the Sniper...I need some money...please call us at 555-555-5555" - GOOFY GOOFBALLS!!!