Authorities were investigating Tuesday whether a concrete-encased body buried in a Georgia backyard is a former Florida journalist who went missing in August . Twin 31-year-old brothers have been arrested on an accusation of concealing the death of another person , said police in Winder , Georgia , where the body was found . William and Christopher Cormier are being detained as the investigation continues , and the twins are known locally for their traveling and playing poker , said Winder Police Chief Dennis Dorsey . An autopsy was being conducted Tuesday to determine if the remains belong to former crime reporter Sean Dugas , 30 , of the Pensacola News Journal , who has been missing since August 27 , said Pensacola Police Capt . David Alexander . Pensacola detectives were working Tuesday in Winder , Georgia , located about 50 miles northeast of Atlanta . Winder police went to the home of the brothers ' father on Monday , acting on information from Pensacola police , Winder Police Chief Dorsey said . The father said his sons arrived from Florida three weeks ago , and the brothers told their father they had been caring for the missing man 's dog but ended up killing the dog , Winder police said . The dog was buried in the backyard of a home that the father is renting , Dorsey said . In the yard , police unearthed a body in a plastic storage container that had been encased with concrete , Dorsey said . The body was buried two feet below the surface , Dorsey said . Authorities believe the body was buried about three weeks ago , and the concrete may have been purchased at a Home Depot , Dorsey said . When the two brothers arrived at their father 's home during the police investigation , they were detained , Dorsey said . The father has n't been charged and is cooperating with investigators , Dorsey said . Managing Editor Ginny Graybiel of the Pensacola News Journal said that Dugas worked at the newspaper from 2005 to 2010 . `` He started as a clerk and became a police reporter -- along the way he did a good bit of entertainment coverage , '' Graybiel said . `` Sean was a very gentle , good-hearted soul . To be the victim of a crime like this is , of course , something we never could have imagined . '' Dugas ' girlfriend noticed he was missing August 27 when she went to pick him up at home for lunch that day and found he was n't home , Pensacola 's Capt . Alexander said in a statement . When she returned to the home on September 7 , she found it empty except for a television , Alexander said . A man who also lived at the house was gone , police said . The girlfriend reported to police on September 13 that Dugas was missing , Alexander said . More from CNN Justice : . Mother awaits sentence for gluing toddler to wall , beating her . Sandusky gets 30 to 60 years for abuse . Man indicted in Central Park rape case . Police find backpack belonging to missing girl .
Former Florida reporter , Sean Dugas , 30 , goes missing August 27 . A buried body encased in concrete is found Monday in a Georgia backyard . Twin brothers , 31 , are being held on an accusation of concealing a death , police say . Police : " The twins were not involved with the murder and have been cooperating fully with authorities.