Large parts of Bengaluru were under water on Monday after torrential rains uprooted trees, caused crippling traffic and forced offices to issue work-from-home orders to employees, raising fears of further disruptions through the week.

The Bangalore Urban district on Sunday received 28.1 mm rainfall, 368 per cent more than the average, according to data compiled by the India Meteorological Department (IMD).

The city has received 141 per cent more rainfall than average since the start of monsoon season on June 1.

"Bengaluru and south interior Karnataka are likely to get heavy rainfall until Friday. From Saturday, rainfall activity will go down," said a senior weather official with IMD based in Pune.

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On Monday, sources told Reuters that Morgan Stanley and Goldman Sachs Group Inc had asked their employees to work from home. IT major Wipro and Walmart's Flipkart said they had asked employees to work from home.

"After two years of work from home, companies are coming back and infrastructure has completely collapsed," said Krishna Kumar, General Manager at the Outer Ring Road Companies Association (ORRCA).

The group represents firms whose offices are located on the Outer Ring Road, which acts as a major connector in the city.

"Authorities need to focus on scaling up the infrastructure," Kumar said.

Monday's flooding forced citizens to empty basements and parking lots, spend more time on the roads in traffic and face power outages in places.

"Right now, we are all living in fear," said Deepa Babu, a psychologist who counsels adolescent kids and lives in Rainbow Drive, an enclave near the city's major tech hubs.

"Yesterday the boundary wall next to our house just collapsed," she added.