A portion of the road near Thakurdwar signal in Girgaon caved in on Monday morning, trapping the rear left wheel of a BEST bus.

The incident occurred around 9:30 a.m. as the Route No. 121 bus (Bus No. 6232) from Backbay Depot was on its way to J. Mehta Marg.

The cave-in happened at a spot where metro construction work is currently underway.

A Metro Line 3 crane (MH01 EN-0039) stationed nearby lifted the stuck bus at 10:45 AM, and the bus was sent back to Backbay Depot by 11:00 AM.

"Water ingress was observed in the basement pit of the proposed Girgaon rehabilitation building, likely due to a nearby utility leakage. This seems to have caused ground loss, forming a cavity that was not visible on the surface. In the morning, one tyre of a BEST bus sank in this area, which was retrieved shortly later. MMRCL is actively coordinating with BMC officials to trace and address any leakages from the water main, sewer main, or storm water drain (SWD) network. Necessary measures are being taken to reinstate the affected road section at the earliest and to prevent any recurrence," MMRCL said in a statement.