Mumbai, Oct 2 (IANS): Zeishan Quadri, who made his directorial debut with "Meeruthiya Gangsters", is doing meticulous research for the third instalment of Anurag Kashyap's "Gangs of Wasseypur" franchise.

"Just returned from Wasseypur on Thursday. I was there for seven days, doing lot of research. I have brought over 1,500 newspaper cuttings from there. It will definitely take time to go through all this and it will be a tough task. But things will most probably sort out by end of this year," Zeishan told IANS at sixth edition of the Jagran Film Festival here on Friday.

He considers Anurag as his mentor and says he has "learnt a lot" from him.

"He (Anurag) says that on field no one will hold your hand and teach you, you have to learn through observation. I always observe him a lot, what he does and how he handles things on set, and learn a lot from him," he said.

Zeishan has also bought the rights for the biopic on Sarabjit Singh -- an Indian farmer who was convicted of terrorism and spying in Pakistan and later sentenced to death. He was attacked by inmates at a prison in Lahore in April 2013, and died a few days later.

The biopic is from the point of view of Sarabjit's sister Dalbir Kaur, to be played by Aishwarya Rai Bachchan.

The title role in the film will be played by Randeep Hooda.