Observing the 20th anniversary of the 2001 Parliament attack, President Ram Nath Kovind and Prime Minister Narendra Modi on Monday remembered the security personnel who lost their lives in the attack and said that the nation shall forever remain grateful to them for their supreme sacrifice.

"I pay homage to brave security personnel who laid down their lives on this day in 2001, defending the Parliament of the world's largest democracy against a dastardly terrorist attack. The nation shall forever remain grateful to them for their supreme sacrifice," President Kovind tweeted.