Ace director Mani Ratnam's film production company Madras Talkies has been issued a show cause notice by the Animal Welfare Board for not taking permission to use elephants in his film 'Ravan' starring Abhishek Bachchan and Aishwarya Rai Bachchan.

One of the two elephants brought for the shoot had turned amok, killing its mahout. Police said there was no shooting today and the unit had informed them that they were shifting to Udhagamandalam.

The film was being shot with the lead pair in the forests near Athirampally waterfalls in Thrissur district when the mahout was trampled to death by the elephant after the shoot was over. Aishwarya, Abhishek and Mani Ratnam were at the shooting site when the incident took place.