Mumbai police on Monday scaled up the Security arrangements at Antilia, the residence of Mukesh Ambani, India’s richest man located in south Mumbai. The security was beefed up after a local taxi driver dialed cops telling them that two men who boarded his cab were asking for the location of the multi storey skyscraper residence of the Ambanis. The call was received at the control room. According to reports, the taxi driver found the passengers carrying a bag too which made the situation suspicious. The cops are now scanning through the CCTV footage to trace the men. Monday’s incident comes months after a car laden with explosives was parked near Antilia. The National Investigation Agency (NIA), had in June, arrested several people including dismissed API Sachin Waze in the case. According to reports, the security arrangements at Antilia are handled by Elite Protection Group.