
Police said the subsiding happened at about 10.30pm in front of Soi Phaholyothin Road 34 near the construction site of the Senanikhom Station of the Morchit-Saphan Mai-Khukot electric train.
The hole was about three metres wide, 10 metres long and two metres deep and was near a Metropolitan Electricity Authority manhole where power cables were kept.
The authorities sealed off a part of the road.