Former Indian prime minister Atal Behari Vajpayee has died aged 93, BBC reports.
He was being treated for age-related illnesses in Delhi's AIIMS hospital.
Vajpayee was one of the founding members of the Hindu nationalist Bharatiya Janata Party (BJP), which currently governs India.
Considered a giant of Indian politics, he served as prime minister three times between 1996 and 2004 and was instrumental in making India a global nuclear power.
During his second stint as prime minister in 1998, he surprised the world by announcing that India had conducted a series of underground nuclear tests.