 The Additional Commissioner (ATS), Sukhwinder Singh, said Sameer Kulkarni and Major (retd) Ramesh Upadhyay were part of an alleged "larger conspiracy", without elaborating what the conspiracy, or the basis for it, was.A serving lieutenant colonel in the army also came under the scanner for his alleged role in the blasts.It was reported that the army had allowed police to go ahead and question him.