India has given several dossiers to Pakistan incorporating evidence about the involvement of ISI officers, Lashkar-e-Taiba chief Hafiz Saeed, LeT commander Zaki-ur- Rehman Lakhvi besides others.
"There have been no action against any one of them. Headley's deposition before court again established that serving ISI officers, Hafiz Saeed and Lakhvi were deeply involved in the conspiracy. We will provide all these fresh evidence to Pakistan for action," a senior government official said.
"Headley's deposition before the court has established that Hafiz Saeed was involved in the Mumbai terror attack. Headley is now in American custody, so the US must take cognisance of his statement and take action against Hafiz Saeed," the official said.
Among the 166 victims of the Mumbai terror attack, four were American nationals.
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Headley told the court through video conferencing that he was trained by LeT in Pakistan-occupied Kashmir (PoK) and Abbottabad near Islamabad under the guidance of LeT founder "Hafiz Saeed sahab", whose picture he identified in the court, as also its commander Zaki-ur-Rehman Lakhvi.
Headley told the court that he had changed his name from original Dawood Gilani after instructions from LeT commanders, including Lakhvi, and ISI officials to carry out recce in India for an attack, an "adventurous" task for him.
Headley said he joined LeT after being "influenced" by its head Hafiz Saeed and took his first "course" with them in 2002 at Muzaffarabad.
Headley is currently serving 35 years prison sentence in the US for his role in the terror attacks.