During the episode, Sigman said he believed his son was a member of a "redneck" gang called the Charleston Five. Palmer said the gang was responsible for the sniper murders. Sigman had not heard from his son for more than two years.
"I don't know if he was involved. Everybody's got theories and conspiracies, but he knew some people who seemed to be involved in that," Randal Sigman said, according to a Sept. 2008 Gazette report published a month after police found Timothy Sigman's remains in Kentucky.
A phone number for Randal Sigman could not be located. Several phone numbers for people believed to be related to Timothy Sigman were disconnected.
Detectives at the Charleston Police Department and the Kanawha County Sheriff's Department told the Gazette that before the episode aired, Sigman's name had never come up during the course of the investigation. That show forced investigators to consider Sigman's involvement, Charleston Police Sgt. Aaron James said in the 2008 Gazette article.
According to Bobby Walker, who said he was Palmer's confidential informant during that show, the revelation spooked Lester. Sigman had been known to blow the whistle on co-conspirators in the past in order to get out of serving prison time on other charges.
"He knew that if he didn't get rid of Timmy sooner or later, he'd tell on him," Walker said. "Shawn had to kill Timmy to get him out of the picture."
About a year after the 2003 murders, Lester had taken Sigman to a property in Willard, Ky., which was a stop along the Mexican mafia's drug route. Sigman stayed there until his death sometime in 2008, Walker said.
There have been few media reports on Sigman's death since that time, and it is not clear how authorities learned of the location of his remains. Kanawha County prosecutors, however, confirmed that a Kentucky medical examiner identified Sigman's body through his dental records.
Supervising deputy U.S. Marshal John James Perrine, who led portions of the initial sniper investigation in 2003, said last month that Lester was connected to several unsolved murders and confirmed that he may have been responsible for Sigman's death.
"I would suggest that yes, he's one of those cases that needs to be looked into," Perrine said.
Charleston Police Lt. Steve Cooper said that there is still a continuing investigation into Sigman's murder.
Reach Zac Taylor at zachary.tay...@wvgazette.com or 304-348-5189.