The incident occurred at a time when the city is witnessing heavy downpour, the officials said

Two rescue vans from the fire and emergency department have been pressed into rescue operations, they said

"Approximately 20 people were trapped. One body was recovered, 14 workers were rescued and five are still missing," D Devaraja, Deputy Commissioner of Police (East Bengaluru) told media

It is a seven-storey building, he said

According to preliminary inquiry, the entire building collapsed following which people got trapped underneath, a fire department official said

A rescue operation was underway to locate the missing people