Mangalore Air Tragedy

I learnt that Mangalore Air accident was worst one for India in last 10 years. 160+ people lost their life, 8 people escaped. Lot of theories are being discussed in news channels....what they will do. Is it due to pilot landed in 2000 ft instead of 1000 ft or is he over stressed or is it over speed ...what went wrong ? as i type this, i m seeing the latest news that the throttle was found in forward position, which means that the pilot would have tried to take off again. How can 10000 hrs experianced pilot , who landed in mangalore for 19 times could do that. All i wish is that the government take necessary steps to make sure that such a tragedynever repeat anywhere in the world.