New Delhi

Nine persons, including eight security personnel, died in the attack by terrorists belonging to Pakistan-based outfits. All five terrorists were killed by security forces.

''I pay my heartfelt tributes to the brave sons of Mother India who made supreme sacrifice by taking on the enemies in the cowardly terrorist attack on the Parliament House, the temple of democracy, in 2001. A grateful nation will forever be indebted for your supreme sacrifice,'' Shah tweeted in Hindi. The home minister also visited the Parliament complex and paid floral tributes to the portraits of those who were killed.

''I bow to their exemplary courage and sacrifice,'' he said. The terror attack led to high level of tension between India and Pakistan and a massive upgrade in the security of the Parliament complex.