High-profile murder trials currently set to begin Nov. 22 will likely be postponed.The two defendants are accused of shooting and killing a Vancouver man in December 2009. Both are charged in Clark County Superior Court with first-degree murder and first-degree attempted murder.Justin Tyler, 22, and Derik L. Maples, 23, both residents of the Vancouver-Portland metro area, will be tried separately, said Deputy Prosecutor Tony Golik.Judge John Wulle’s judicial assistant said late last week that the trials may be postponed because of a scheduling conflict.Tyler and Maples are implicated in the Dec. 1, 2009, death of 45-year-old Clement Adams.Adams was shot while sitting in a sedan parked outside the S&S Mart in the Rose Village neighborhood. The attempted murder charge relates to Adams’ passenger, Tyshaun Foreman, who was not injured.The shooting was a result of a drug deal gone bad, prosecutors have alleged in court documents.According to court documents, Adams and Foreman drove to the S&S Mart to meet the two men to score some drugs at about 5 p.m. Police said Adams tried to pay for powder cocaine with counterfeit bills, triggering a confrontation with Maples.When Adams tried to drive out of the parking lot, having failed to get the cocaine, Maples allegedly shouted to Tyler, who was hiding in a nearby alley, to “Dump, Dump, Dump!” according to court documents. Four or five shots were fired, shattering the Chrysler sedan’s rear window, police said.The sedan continued about 100 feet south, where it crashed into the front steps of a home at 1909 E. 33rd St. Authorities found Adams’ body in the home’s yard.