The horrific scene of the incident caught on camera showed stuntmen Anil and Uday jumping off from the helicopter into the Tippagondanahalli lake from a height of about 50 feet.
They were followed by popular Kannada actor Duniya Vijay.
The actor who was trying to swim toward the shore was rescued by a fisherman who was on hiscountry boat.
Anil and Uday are then seen splashing water in anattempt to save themselves, before they went missing. Both reportedly did not know swimming.
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The video also showed people on the shore shouting ata rescue diesel boat crew to rush towards the drowning stuntmen, butit could not move due to technical fault.
It is alleged that there were no expert divers onthe spot.
According to locals, the place where stunt was being picturised was a dangerous spot as there is about 30-40 ft of silt below 15-20 feet of water.
There are also abandonedfishing nets at the spot.
Officials said lack of precautionary measures andfaulty rescue boats were stated to be the main cause for the mishap.
Speaking to a Kannada news channel before performing the stunt, Uday had said he was "scared" of the stunt and was not good at swimming.
"I'm very scared first of all. I have not done (such stunt) so far, nor have I seen anyone performing such stunt sofar, so I'm scared. Whatever safety is done there is always a fear within oneself, despite that the situation is that I have to perform it....
Stating that precautionary measures had been taken bythe team, he said "preparation is what they have done, theyhave said that once we fall they will come (in boat), we are dependent onit, if there is anything above it, there is God.
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