With the US announcing a USD 10 million bounty on Mumbai attack mastermind Hafeez Saeed, Prime Minister Manmohan Singh on Wednesday said those engaged in terror acts against India should be brought to book.

"All those who are engaged in terrorist acts against our country should be brought to book," Singh told reporters on the sidelines of a function to give away Padma awards at Rashtrapati Bhawan here.

Singh was asked to comment on the US bounty on Saeed and whether he would take up the matter with Pakistan President Asif Ali Zardari during his India visit on Sunday.

The US State Department has announced a reward of upto USD 10 million for information leading to the arrest and conviction of Lashkar-e-Taiba founder Saeed and a reward of upto USD two million for information leading to the location of LeT's second-in-command Hafiz Abdul Rahman Makki.

LeT was designated by the US State Department as a Foreign Terrorist Organization on December 20, 2001.

Saeed was involved in the planning of the four-day terrorist attack on Mumbai in November 2008 that left 166 individuals dead, including six US citizens, the State Department said.