Former Indian President A.P.J. Kalam has died at a hospital after collapsing while delivering a lecture in northeastern India.

The president from 2002 until 2007 was known as the father of the country's military missile program.

B. Warjri, chief secretary of Meghalaya state, said Kalam died Monday evening at a hospital. He was 83.

Kalam fell sick Monday while addressing the students of the Indian Institute of Management in the Meghalaya city of Shillong.