The cast of the Farhan Akhtar directed movie 'Don 2' was in for a bad news.

Actress Priyanka Chopra's stunt doubles in the film, Bibi, who was from Berlin, passed away due to unknown reasons.

"It's shocking how unpredictable life can be Bibi. My stunt double from Don 2 passed away. Taught me all I did in the film," Chopra wrote on Twitter.

"RIP Bibi heres a prayer for her and courage her family from all of us on Don 2," she added.

The lead actor in the movie Shah Rukh Khan also expressed his grief and wrote, "A prayer from all in Don 2 for our friend & stunt girl Bibi who left us for a better place Love u."

The movie is the sequel to the 2006 film, 'Don: The Chase Begins Again', which itself is a remake of the 1978 Amitabh Bachchan starrer 'Don'.

It is set to hit the theatres in Dec 2011.