Kolkata: Eminent Bollywood singer Krishnakumar Kunnath, popularly known as KK, passed away at the age of 53 in Kolkata after suffering from a heart attack. The singer reportedly fell unwell while performing at a concert at Nazrul Manch in Kolkata. He returned to his hotel in Esplanade and collapsed. He was rushed to Calcutta Medical Research Institute at around 10:30 pm, where doctors declared him brought dead.

KK, known as a versatile singer, has given his melodious voice for songs in languages like Hindi, Tamil, Telugu, Kannada, Malayalam, Marathi, Bengali and many other.