Frankfurt / Main (dpa / lhe) – After the discovery of a man’s body in an apartment in Frankfurt, the police are investigating a possible crime. A stab wound was discovered on the dead man, but the cause of death is still unclear, the police said on Monday. The 44-year-old tenant of the apartment informed a street worker about the body on Friday. The officers then found the lifeless 53-year-old man in the apartment. He was known from the drug scene. The tenant was initially arrested. But because the suspicion against him was not substantiated, he was released again.