The COVID-19 death toll in the country rose by 1,258, including 511 deaths reported from the state of Maharashtra, the health ministry data showed.
New variants are a particular concern in India, where more than half the population has not been vaccinated. Less than 6% of India's adult population of 950 million has received two doses.
At least 20 cases have been found linked to the Delta variant, which India last week designated a variant of concern last week, according to the health ministry.
India's official death count is now 395,751, but experts and global health agencies such as the World Health Organisation believe the toll may be much higher. Of the 35.51 million people infected, 29.25 million have recovered.
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