PHILADELPHIA (AP) -- Four people forcibly tattooed a man with racial slurs and obscene images while holding him hostage for three days in a Philadelphia basement, authorities said Wednesday. Police said the victim's lower arms were covered with nearly a dozen offensive tattoos when he flagged down police after calling 9-1-1 Tuesday morning. The 52-year-old victim, whose name has not been released, told investigators he had been held against his will since Sunday afternoon in the basement of a home where he lived with three of the four suspects, according to police. The man said he was beaten and tattooed by three of them. Police said the victim's hands were badly bruised and swollen and his eyes, legs, ribs and torso were also bruised. The alleged victim told authorities he was able to leave the house when the suspects fell asleep. Two men and two women were charged with aggravated assault, reckless endangerment, kidnapping and related counts. Authorities identified the suspects as Corry Campbell, 20, Sandra Ng, 19, and Jennifer Pratt, 29, who lived with the victim; and David Thomas, 27, who lived a few miles away. It couldn't immediately be determined if they had attorneys. Police did not specify which of the three the alleged victim said had beaten him. A search of the home turned up 155 grams of marijuana, several bottles of Xanax and Oxycodone, various tattoo ink bottles, a tattoo station and needles, and a tattoo gun, police said. The victim's debit card was also found. Investigators said the home is a known nuisance property. Police have been called to the address 20 times over the past several years.