According to reports, sources who have been involved in the questioning of Yasin since his arrest on August 28 revealed that he accepted being present at the scenes of the Chinnaswamy Stadium blasts, the German Bakery blast of February 13, 2010, and the Mumbai blasts of July 13, 2011.
"It may have to do with the fact that he knows that many of his associates involved in the stadium blasts case have been arrested so he admitted his involvement in the offence," a police official who interrogated Yasin last week said.
But then, Yasin also claimed he was not present at the site of the Pune blasts of August 12, 2012 and the February 21, 2013 blasts in Hyderabad.
The stadium case was almost solved after the arrest of five IM operatives in New Delhi in November 2011, namely, Riyaz Bhatkal, Iqbal Bhatkal and Mohsin Chaudhry - the other top line leaders of the IM.
Sources said Yasin had been forthcoming with respect to his involvement in the cases and even told Gujarat officials that the state police were responsible for his actions. He claimed to have lost all connections to his family in Bhatkal since 2005.
Yasin was present at the scenes of Stadium and German bakery blasts
Yasin claimed he does not know the source of the explosives used in the bombs. "There is a lot of information that he is hiding with respect to associates and sources of supply of materials. His communication with associates was largely through online forums like chats. The chat logs need to be analysed for information he may be withholding," a source said.
This IM operative Yasin Bhatkal was arrested on August 28 from Gorakpur in eastern Uttar Pradesh near the Indo-Nepal border, in an operation carried out by the NIA.