Singer Krishnakumar Kunnath, popularly known as KK, passed away on Tuesday night. He was 53.

As per reports, he fell ill while performing at an event in Kolkata. He was taken to CMRI Hospital where he was declared brought dead.

KK was performing at Nazrul Mancha for Gurudas College’s fest when he fell ill.

The popular playback singer was born in Delhi to Hindu Malayali parents. He started his musical journey with the first solo album Pal in 1999. KK was known for voicing acclaimed songs like Tu Hi Meri Shab Hain (Gangster-2006), Tadap Tadap Ke( Hum Dil De Chuke Sanam-1999), Dil Ibaadat (Tum Mile- 2009) and Ankhon Mein Teri ( Om Shanti Om- 2007), among others.

He has recorded hit songs in several languages including Hindi, Tamil, Telugu, Kannada, Malayalam, Marathi, Bengali, Assamese and Gujarati.

Prime Minister Narendra Modi also took to Twitter and expressed his grief over the demise. “Saddened by the untimely demise of noted singer Krishnakumar Kunnath popularly known as KK. His songs reflected a wide range of emotions as struck a chord with people of all age groups. We will always remember him through his songs. Condolences to his family and fans. Om Shanti,” he wrote.

Superstar Akshay Kumar expressed shock over the incident. “Extremely sad and shocked to know of the sad demise of KK. What a loss! Om Shanti,” he tweeted.