The accused made the calls between 10.39am and 12.04pm on the landline number of the hospital. He had got the number from a public portal. He abused Mukesh Ambani and threatened to kill him. He also mentioned late Dhirubhai Ambani in one of the calls.
The Maharashtra police have been questioning a jailed gangster in this regard and the officials have brought the residence of the actor in Mumbai under the scanner.
A senior police official said Kundra was arrested in a case related to the alleged creation of pornographic films and publishing them through some mobile applications.