Singer-composer KK, whose real name was Krishnakumar Kunnath, died in Kolkata on Tuesday at the age of 53. He was in the city for a two-day concert, and took ill during an event at Nazrul Mancha. “He was brought dead to the hospital around 10 pm,” said a CMRI hospital staff. He died of a suspected heart attack, The Indian Express reported.

According to sources, KK felt unwellduring the concert. He complained of uneasiness during the interval but performed till the end of the event. Post that, he was taken to a five-star hotel in Esplanade, where his health deteriorated, and he died before he could reach the hospital. The concert had been organised on behalf of Gurudas College. The singer was in the city for a two-day event. KK also posted photos from the concert hours before his death. “Pulsating gig tonight at Nazrul Mancha. Vivekananda College !! Love you all,” he wrote.

KK is survived by his wife and two children. West Bengal Sports and Youth Affairs Minister Arup Biswas, who rushed to the hospital immediately after KK’s death, told IANS that the body has been sent for post-mortem. “His family members have been informed. They are likely to reach Kolkata early on Wednesday morning,” he said, according The Indian Express.

As soon as the news of his death broke, people from all walks of life paid tribute. Prime Minister Narendra Modi tweeted, “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.”