Kolkata, May 14 (PTI) A portion of Brabourne Road in central Kolkata subsided after an underground water pipeline burst, a senior police officer said on Saturday.<br> The cave-in was noticed by an on-duty traffic police officer on Friday night and authorities concerned were informed, he said.<br> The traffic on the road underneath a flyover was diverted through the other lane, the police officer said.<br> Repair work was started by Kolkata Municipal Corporation (KMC) workers on Saturday morning and it is expected to be completed by Sunday, he added. PTI SCH<br>ACD ACD