Hyderabad/Thiruvananthapuram, Jan 25 Popular Malayalam film actress Kalpana passed away on Monday in a Hyderabad hotel, film director Sibi Malayil said.

The actress, after found in an unconscious state in the hotel, was rushed to a hospital where the doctors declared her brought dead. She is believed to have suffered a cardiac arrest, Malayil said.

The 50-year-old actress had acted in more than 300 films and was in Hyderabad to attend a private function.

She had bagged the National Award for the Best Supporting Actress for her performance in \"Thanichalla Njan\".

Popular actress Urvashi and Kalaranjini are her siblings.

Popular Malayalam actress Kalpana dies at 50