Veteran Bollywood actor-filmmaker Satish Kaushik has died at the age of 66 following a heart attack early Thursday, PTI reports, citing his close friend Anupam Kher.

According to Kher, Kaushik complained of uneasiness when he was at a friend's home in Delhi.

"He felt uneasy and he told the driver to take him to the hospital and on the way he suffered a heart attack around 1 am," Kher told PTI.

In a tweet earlier, Kher expressed deep shock over Kaushik's sudden death.

"I know that death is the ultimate truth but never in my dreams I thought that I would have to write that about my best friend Satish Kaushik. A sudden full stop to 45 years of friendship. Life will never be the same without you Satish! Om Shanti," Kher tweeted.

Satish Kaushik, an alumnus for the National School of Drama and the Film and Television Institute of India, was most known for his roles in films such as "Jaane Bhi Do Yaaron," "Mr. India," "Deewana Mastana," and "Udta Punjab."

Kaushik was also known for filmmaking in Bollywood. As a filmmaker, He directed some of the most popular hits of Bollywood, namely "Tere Naam" starring Salman Khan and "Mujhe Kuch Kehna Hai" starring Kareena Kapoor Khan and Tusshar Kapoor.

Many Bollywood actors and actresses have expressed their shock over the news of his sudden demise.