Police have expanded their search area for Noah Terry Thomas of Pulaski County. (Photo: Pulaski County Sheriff's Office) 
 
 DUBLIN, Va. (WUSA9) -- Pulaski County Sheriff's Office authorities say the investigation into the discovery of the body of a missing five-year-old boy in a septic tank will be "moving forward the focus will be on facts and physical evidence and will not be driven by speculation or rumors." 
 
 The autopsy on Noah Thomas has been completed my the medical examiner, but the cause of death is pending. No timetable has been given on when those results will be released. 
 
 Autopsy on #NoahThomas is FINISHED. Medical Examiner: Results are PENDING. Cause of death will help exlpain what happened to Noah. @wusa9 — Mola Lenghi (@MolaReports) March 27, 2015 
 
 County spokesperson Anthony Akers delivered the statement for the sheriff to the media on Friday morning. Akers would not speak about the investigation into Noah Thomas' death beyond what the sheriff's written statement contained, but did thank residents, search team members and members of the media for their help and cooperation over the last several days. 
 
 The body of a missing five-year-old Virginia boy was found in a septic tank Thursday afternoon, the Pulaski County Sherriff's Office said. WUSA 
 
 Very few details are emerging from this investigation. All week police talked about their frustration over a lack of leads while searching for Noah Thomas. 
 
 Then on Thursday, police had a major break when they found Noah's body in the septic tank on his parents property. Now it seems as if leads may be drying up again. 
 
 Authorities are pleading with the public to come forward with any information or tips they may have. 
 
 Police say no arrests have been made, there are no suspects, no charges and no cause of death. 
 
 Noah Thomas was found dead Thursday in a septic tank in Dublin, Va. 
 
 Noah was last seen Sunday morning by his mother. He was watching cartoons when she says she took a two hour nap. She woke up and Noah was gone. Five days later his body was found. 
 
 Police are not not releasing much information and they're not answering many questions about the investigation, or anything close to it. 
 
 WUSA9's Mola Lenghi asked repeatedly about the septic tank, how someone can gain access to it, if there's any possibility of an accident and he didn't get any answers. 
 
 Authorities will be relying heavily on Noah's exact cause of death. Once they know that, they hope to have a better understanding of what happened. 
 
 Authorities say the family is fully cooperating with the investigation. 
 
 Pulaski County Sheriff's Office continue to encourage people to come forward with any information about the boy's disappearance or death. 
 
 Noah Thomas went missing from his home on Sunday and his body was found shortly after 1 p.m. Thursday near his family's home. 
 
 Since Sunday, authorities canvased a nearly 10 mile radius around the house, as it turned out, Noah was right there on the property. 
 
 "His body was found in a septic tank after a more detailed and aggressive search. The recovery of the body is now a part of our investigation, " Jim Davis, of the Pulaski County Sheriff's Office said. 
 
 The body of a missing five-year-old Virginia boy was found in a septic tank Thursday afternoon, the Pulaski County Sherriff's Office said. 
 
 The FBI is on scene to provide forensic support. 
 
 Police are still trying to determine a cause of death but some family members suspect foul play. The boy's uncle told the Roanoke Times, "You don't get in a septic tank by accident. Somebody's going to pay." 
 
 It could be mere coincidence but after the sheriff offered a $5,000 reward, the boy's body was found Thursday afternoon. According to neighbors, every home has a septic tank which is roughly four to five feet underground. 
 
 The sheriff says while there is no hard evidence Noah was home Sunday, he is trusting the mother's statement that she last saw her son watching cartoons in the living room that morning. He asks the public not to judge the parents, saying "they are living a nightmare." 
 
 A candle light vigil is planned to remember the life of Noah Thomas. The memorial will be held Friday, 8 p.m. at the Pearisburg Rec Center (also known as the old King Johnston Middle School) located at 1410 Wenonah Ave. in Pearisburg, Va. 
 
 PREVIOUS: Noah Thomas missing: $5K reward offered for info 
 
 This hazmat vehicle was just seen pulling up to the area where #NoahThomas was last seen. http://t.co/knanWpZ81tpic.twitter.com/54hII8LxT2 — WDBJ7 (@WDBJ7) March 26, 2015 
 
 This is the scene outside the Highland Rd. home #NoahThomas went missing from. http://t.co/knanWpZ81tpic.twitter.com/WhJtB8PiN8 — WDBJ7 (@WDBJ7) March 26, 2015 
 
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– Noah Thomas' mother says her 5-year-old was watching cartoons in his Pulaski County, Va., home on Sunday when she took a two-hour nap. She woke up and he was gone. Yesterday, his body was found in a septic tank on his parents' property, USA Today reports. Investigators have yet to determine what happened, and this morning the sheriff's office called for a focus on "facts and physical evidence" rather than "speculation or rumors." The investigation is currently framed as a "death investigation, with WDBJ noting "crime scene" tape wasn't used at the scene. Authorities should know more when a cause of death is determined, though it's not clear when that will be. Investigators haven't answered questions about how the septic tank can be accessed and whether it's possible the death was an accident, but at least some family members have their suspicions. "You don't get in a septic tank by accident," an uncle tells the Roanoke Times. "Somebody's going to pay." Neighbors say septic tanks in the area are typically four to five feet underground; Noah's body was found just hours after a $5,000 reward was announced. As for his parents, they are cooperating with authorities, and the sheriff, who describes them as "living a nightmare," asked that the public refrain from rushing to judgment. Says the uncle, "No one loved Noah more than Paul and Ashley." The search for the boy began within half an hour of his mother realizing he was missing, WDBJ reports.