PARIS — The R&B singer Chris Brown was released without charges on Tuesday after he was questioned by the Paris police over a rape accusation, according to the authorities and his lawyer.

Shortly afterward, Mr. Brown said in a message on his Instagram account that the accusations were “false” and that his accuser was “lying.”

Mr. Brown, 29, had been taken into custody on Monday for questioning about an accusation of aggravated rape and possible drug infractions. Reports in the French news media said that an investigation had been opened after a woman filed a complaint with the Paris police, accusing him of raping her at his hotel last week after they met at a nightclub in the capital.

The Paris prosecutor’s office said on Tuesday evening that Mr. Brown had been released without charges but that the investigation was continuing. Mr. Brown’s lawyer in Paris, Raphael Chiche, confirmed that his client had been released but did not comment further on the allegations against him.