Mumbai, Nov. 9 -- The city police on Monday intensified vigilance in south Mumbai, specifically around industrialist Mukesh Ambani's house Antilia, after a taxi driver informed them that two suspicious men asked him for the address. The police have placed barricades outside the house, and checkpoints have been put in various parts of south Mumbai.

According to police, a cab driver visited Azad Maidan police station on Monday afternoon and said that two people in a WagonR car stopped near him at Killa Court and asked for the address of Antilia. The driver also told police that the people looked suspicious and were carrying two bags.

The Azad Maidan police questioned the cab driver and have recorded his statement. They are also scanning C...