The 100-year rains that have brought massive flooding to the coastal Indian state of Tamil Nadu are now to blame for at least 270 deaths, according to the latest reports on Thursday morning.

Al-Jazeera reported the death toll increase, saying that 14 inches of rain fell on the state’s already-waterlogged capital city of Chennai on Tuesday. Forecasts called for more rainfall.

India traditionally receives significant rainfall during its monsoon season, but this year’s rains have been reported to be the heaviest in a century. Al-Jazeera reported Thursday that Tamil Nadu usually only receives less than two inches of rain during the entire month of December.

The flooding was particularly significant in Chennai, one of India’s most populous cities and a major player in the country’s automobile industry. Reuters reported Thursday that 3 million people lacked access to basic services as a result of the floods, with one resident telling the news agency some people had all of their belongings washed away and had gone days without food.

The city’s flooded airport has been closed through at least Sunday, the BBC reported, and some train services have also been suspended. The military was deployed to aid in the relief efforts.

Reuters reported Thursday that Indian military personnel rescued 2,000 Chennai residents and that the country’s prime minister, Narenda Modi, has promised $150 million in relief funding.

But Assocham, an Indian trade association, said in a news release that it believes the flood could cause a financial loss of $2.25 billion as Chennai “has come to a virtual standstill and is in the grip of fear and panic.” In addition to the crippling effects on the city’s auto industry, Assocham said the engineering, tourism, information technology and textile sectors were also badly hit.

Rescue efforts were reportedly continuing, as water levels had not receded. Apart from the heavy rainfall, experts told Reuters that drainage been hampered by faulty design and garbage buildup.

Earlier published reports indicated the rainfall drove at least 200,000 people from their homes, and some unaffected residents were using social media to invite the displaced into their houses.

Modi blamed the significant rainfall on climate change, Reuters reported, and some experts have also said that the El Nino weather pattern could have intensified the monsoon season.

United Nations officials have warned that this year’s El Nino is expected to be one of the three worst in the past 65 years, and may interact with climate change to create unprecedented effects.