CJM Sudhir Jiwan made the disclosure in the courtroom in Jhajjar after granting bail to Pataudi who had been in police custody for the last two days.
However, he did not reveal from whom he had got the calls.
Pataudi, who had been accused along with seven others of killing a black buck and two hares, had surrendered before the court on Saturday after evading arrest for a fortnight.
He was sent to a day's police custody that was extended by another day yesterday.
Some organisations and communities have accused the police of going slow in the investigations into the case.