KOLKATA: Indian police said Wednesday they are investigating the death of star Bollywood singer Krishnakumar Kunnath, popularly known as KK, who died at age 53 after a concert.

The singer died shortly after performing at a college festival in Kolkata on Tuesday evening, prompting a wave of tributes.

He was rushed to hospital from his hotel at around 10:30 pm, where doctors pronounced him dead.

Aroop Biswas, a government minister in the eastern state of West Bengal, said KK had died of a “suspected cardiac arrest”.