Plot to Kill Obama: Shoot From High Vantage Point DENVER (CBS4) ― CBS4 has now learned at least four people are under arrest in connection with a possible plot to kill Barack Obama at his Thursday night acceptance speech in Denver. All are being held on either drug or weapons charges. CBS4 Investigator Brian Maass reported one of the suspects told authorities they were "going to shoot Obama from a high vantage point using a ... rifle ... sighted at 750 yards." Law enforcement sources tell Maass that one of the suspects "was directly asked if they had come to Denver to kill Obama. He responded in the affirmative." The story began emerging Sunday morning when Aurora police arrested 28-year-old Tharin Gartrell. He was driving a rented pickup truck in an erratic manner according to sources. Sources told CBS4 police found two high-powered, scoped rifles in the car along with camouflage clothing, walkie-talkies, a bulletproof vest, a spotting scope, licenses in the names of other people and methamphetamine. One of the rifles is listed as stolen from Kansas. Subsequently authorities went to the Cherry Creek Hotel to contact an associate of Gartrell's. But that man, who was wanted on numerous warrants, jumped out of a sixth floor hotel window. Law enforcement sources say the man broke an ankle in the fall and was captured moments later. Sources say he was wearing a ring with a swastika, and is thought to have ties to white supremacist organizations. A third man -- an associate of Gartrell and the hotel jumper was also arrested. He told authorities that the two men "planned to kill Barack Obama at his acceptance speech." That man, along with a woman, are also under arrest. cbs4denver.com - Investigators Look Into Possible Plot To Kill Obama The Secret Service, FBI, ATF and the joint terrorism task force are all investigating the alleged plot.