The lone captured terrorist in last month's Mumbai carnage admitted to being a Pakistani national and sought legal aid from his country, Indian media reported Sunday.
Ajmal Amir Kasab wrote a three-page letter to the Pakistani High Commission in New Delhi confessing his role in the attacks and stating his entitlement to legal help to defend himself in Indian courts, the Times of India daily reported, citing senior Mumbai police official Rakesh Maria, dpa reported.
Kasab was one of 10 men who carried out multiple attacks in Mumbai, killing 164 people and injuring more than 300 on November 26. Nine terrorists were killed by Indian commandos.
Indian authorities claim Kasab is a member of a Pakistan-based militant organization Lashkar-e-Taiba.
The letter not only settled the debate about Kasab's origin and the nine other terrorists, but was a embarrassment for Islamabad that has balked at accepting that the attacks were launched from Pakistani soil, the report said.
"I am the biggest sinner, I have killed so many innocent people, may God forgive me," Kasab wrote. "My biggest crime is against my parents ... I have given them immense pain."
The newspaper said Kasab's letter contained details on each of his nine dead colleagues, their addresses and names of key LeT commanders who trained them - including Zakiur Rehman Lakhvi, who was arrested by Pakistani police December 8.