Paris - American R&B star Chris Brown was released without charge on Tuesday after being held overnight for questioning over a rape allegation in Paris, the prosecutor's office said. A 25-year-old woman has accused Brown, along with his bodyguard and a friend, of assaulting her in the luxury Mandarin Oriental hotel last Tuesday night, a source close to the case said on condition of anonymity. The Grammy Award-winning singer, 29, was detained on Monday on suspicion of aggravated rape and a drug offence.