Philadelphia ( CNN ) -- At first , a Philadelphia landlord said , he thought one of his tenants was attempting to conceal a dog after finding a dog dish in the basement of his apartment building . But on a return trip to the basement Saturday , Turgut Gozleveli found something much more sinister : four mentally disabled people held captive , including one man chained to a radiator . `` It was terrible , '' he said Sunday , adding the people were surrounded by human waste . `` I do n't know how long they were there . '' Three people have been arrested and accused of holding the people captive and stealing their Social Security checks . Linda Ann Weston , 51 ; Thomas Gregory , 47 ; and Eddie Wright , 49 , face charges including criminal conspiracy , aggravated assault , kidnapping , criminal trespass , unlawful restraint , and false imprisonment , Philadelphia police said in a statement Sunday . The alleged victims include a 29-year-old woman and three men , ages 31 , 35 and 41 , said Philadelphia police Lt. Ray Evers . All seven -- the three suspects and four alleged victims -- had been traveling together , he said , but did not know for how long . Weston is believed to have been in McLean , Texas , with some or all of the alleged victims . They then traveled to Florida and Philadelphia , Evers said . Gozleveli , who also serves as the building 's janitor , said he was contacted Thursday by the block captain of a neighborhood group regarding suspicious activity . He checked out the basement that day and found a few things out of place , but no people . On Friday , he found the dog dish . On Saturday , after hearing a dog barking , he went to the building 's sub-basement and found a door chained shut . He found the people after removing the chains . `` Other than the barking dog there was no sound , '' he said . `` ... I said , 'What the hell are you doing here ? ' No answer , and I called 911 . '' `` This was a total surprise , '' Gozleveli said . `` I never expected to find people . I just expected to find a dog . '' The people , he said , `` acted like children . '' The four were in a room roughly 10 feet by 15 feet , Gozleveli said , and looked malnourished and disheveled . They had a metal bucket and a jug of what appeared to be orange juice , but no food . They also had pillows and blankets , but did n't know where they were or where they had come from , he said . Authorities believe the four were trapped in the tiny room for up to a week . Evers said they suffered from bed sores and `` injuries that are very , very hard to describe . '' The alleged victims appeared to be malnourished and were taken to a hospital . They were listed in stable condition Sunday , police said . The FBI is also investigating . The northeast Philadelphia building is a former movie theater converted to a seven-unit apartment building . Police cars were still outside the building Sunday afternoon . The four people found in the basement were brought out on stretchers , said Danyell Tisdale , the block captain who notified Gozleveli . She said she was concerned about some of the things she 'd seen recently , including people being brought in from the back of an SUV with out-of-state plates . `` I hope I did enough , '' she said . `` I called . '' CNN 's Ross Levitt contributed to this report .
Suspects face charges of aggravated assault and kidnapping , among others . Score: 6 Three suspects are accused of detaining them and stealing their Social Security checks . Authorities believe the four were held captive for up to a week .