Story highlights Lightning strikes are common during India's monsoon rains

Farmers depend on monsoons to deliver vital water

New Delhi (CNN) Lightning strikes killed at least 120 people in four Indian states as monsoon rains swept across much of the country.

"Lightning strikes are common during monsoons, but there have been more strikes than usual this year," said Vyas Ji, principal secretary in Bihar, where a record 57 people died Tuesday from the strikes -- the most of any state in the country.

Lightning is the leading killer among natural disasters in India. In 2014, at least 2,582 people died in lightning strikes, according to the government.

Indians wade through a flooded street Tuesday in Mumbai.

Here's a breakdown of deaths reported in other states Tuesday:

• Forty-one people died in Uttar Pradesh, according to Anil Kumar, relief commissioner for the state government.

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