Additional Sessions Judge Kamini Lau said the investigation conducted by the police was not "honest" and it was "motivated to assist the accused".
The court freed Adarsh Nagar resident Sunny Bhagat of the charges of raping, administering poisonous substance and threatening the woman, saying the acquittal was due to lapses committed by the investigating officer, who failed to bring evidence and not on account of "innocence of the accused".
"In this background, it is necessary that the copy of the judgement in the present case be placed before the Commissioner of Police, Delhi, as also the Director of Prosecution for information and necessary action against the erring officers," the judge said.