NAVI MUMBAI, April 6 -- Three children aged between 10 years and 14 years had a narrow escape on Friday as a large part of the ceiling above their two-bedroom apartment in a posh locality in Vashi collapsed, leaving cracks on their floor. The collapse was likely caused due to workers using a powerful vibrator to remove concrete from the floor above, said officials. While the workers fled the spot and were reportedly not injured, the Navi Mumbai Municipal Corporation (NMMC) has offered to shift the families residing in the two affected apartments to Rajasthan Bhavan....