"If anyone is in state of denial, then anything we give is denied," Chidambaram, who has completed one month as home minister, told reporters at his first formal press conference in New Delhi.
"The fact is that GEO TV has admitted of interviewing Mohammed Ajmal Amir Kasab's father, who has admitted Kasab as his son. Kasab has also written a letter seeking legal assistance from Pakistan. Now, what more evidence does Pakistan require?" he asked.
Kasab was the lone terrorist to be captured alive by the security agencies during the Nov 26-29 attacks when a group of 10 militants allegedly from Pakistan stormed Mumbai and killed over 170 people. Nine terrorists were gunned down in operations that lasted for over 60 hours.
"The investigations into the Mumbai attack are in progress and are proceeding on right track," Chidamabaram said.