A threatening email sent to Mumbai Mayor Ritu Tawde reportedly named Amitabh Bachchan’s Juhu home and Diljit Dosanjh’s November 27 concert, prompting increased security across the city. A threatening email received by Mumbai Mayor Ritu Rajesh Tawde on Friday reportedly targeted her office, Punjabi singer Diljit Dosanjh's November 27 concert at Mahalaxmi Racecourse and. A bomb threat email was received at the Mumbai mayor’s office, prompting authorities to check the premises.