New Delhi , India ( CNN ) -- Indians marched for peace , prayed and laid wreaths Friday in memory of the Mumbai terror attack as the nation 's prime minister vowed renewed efforts to track down those behind the assault , which is blamed on Pakistan-based militants . `` We will never succumb to the designs of our enemies . We pledge to redouble our efforts to bring the perpetrators of this crime against humanity to justice , '' Prime Minister Manmohan Singh said in a statement issued as the nation remembers the dead from the November 2008 siege of India 's financial hub . The attack derailed the fragile peace process between nuclear-capable arch-foes India and Pakistan . Under U.S. pressure , the two neighbors resumed talks this year in a bid to restart a full dialogue , but progress has been slow . In the coordinated onslaught , 10 gunmen stormed three hotels , a train station and a Jewish cultural center in Mumbai , killing 164 . On the second anniversary of the attacks , Indian Home Minister P. Chidambaram paid homage to the police officers who died in the assault , including one killed tackling one of the militants . That militant , Mohammed Ajmal Kasab of Pakistan , is the only surviving gunman . He has been convicted of murder , conspiracy and waging war against India . His lawyers have appealed his death sentence to a higher court of Mumbai . `` On this day of remembrance , we salute the courage , unity and resolve of ordinary Mumbaikars and the brave and selfless actions of our men in uniform during the attack , '' Singh said in his statement . `` It is this spirit and strength of character of the Indian people that will defeat such forces that seek to threaten our social fabric and way of life . '' Prithviraj Chavan , chief minister of Maharashtra state , of which Mumbai is the capital , also offered homage Friday at the city 's Victoria Terminus railway station , one of the sites that came under attack . A peace march and a multi-faith prayer session were held at the seaside Gateway of India monument , said Chavan 's spokesman , Satish Lalit . U.S. Secretary of State Hillary Clinton sent a message of solidarity Thursday to mark the assaults . `` As the people of the United States gather with family to celebrate Thanksgiving , we pause to remember the horrific attack on innocent men , women and children that occurred in Mumbai two years ago , '' her message said . `` Now , as then , the American people stand in solidarity with the people of India and honor those who lost their lives . `` President Obama 's recent visit to India underscored our nations ' shared belief in liberty , democracy and mutual respect for all people . As the people of Mumbai gather in temples , mosques , churches , gurdwaras and synagogues to honor those who perished on November 26 , 2008 , they send a message of resolve , resilience and mutual respect that is far louder and more powerful than any terrorist 's guns and bombs . '' The Pakistan-based militant group Lashkar-e-Tayyiba has been blamed for the siege . The group has denied responsibility . Earlier this week , family members of two New Yorkers gunned down during the attacks said they are suing Pakistan 's intelligence agency and Lashkar-e-Tayyiba . Relatives of Rabbi Gavriel Noach Holtzberg and his pregnant wife , Rivka , both of whom died in the siege , allege that Pakistan 's Inter-Services Intelligence agency aided the al Qaeda-allied militant group in the attacks . The wrongful death lawsuit , filed in federal court in New York , says the intelligence agency `` provided critical planning , material support , control and coordination for the attacks . '' The family members seek monetary damages , but did not specify an amount . Their lawyer , James Kreindler , was part of a successful lawsuit against Libya in connection with the 1988 explosion on Pan Am Flight 103 . That blast killed 259 people over Lockerbie , Scotland , as well as 11 people on the ground . In January , more than a year after the attacks , the bodies of the nine slain Mumbai gunmen were buried in secret . Their bodies had been embalmed and kept in a hospital morgue because some Muslim groups refused to bury them in their graveyards , saying the attackers were not true followers of Islam . An Indian official in Maharashtra state revealed the burials months later . P.K . Jain , the state 's principal home secretary , did not give the date or the exact location of what he described as a secret funeral .
Prime minister : `` We will never succumb to the designs of our enemies '' 164 people were killed in the attack , which lasted three days . Ten gunmen stormed hotels , a train station and a Jewish center . The attackers used automatic weapons and grenades ; they also blew themselves up at the scene of their crime.