Indian policemen march past the Trident hotel during a parade Friday to mark the second anniversary of the Mumbai attacks. (Rafiq Maqbool/Associated Press)

India marked the second anniversary of the Mumbai terror attack Friday with sombre ceremonies and a renewed promise to seek justice for the 166 people killed in an assault that has set back peace efforts with archrival Pakistan.

The 60-hour siege Nov. 26, 2008, by 10 Pakistani militants paralyzed the financial capital as gunmen attacked ordinary commuters in a train station, and targeted the rich and famous at luxury hotels. They also killed tourists at a popular cafe, overwhelmed the local police force and took over a Jewish centre.

A man pays homage in front of portraits of police officers killed in the Mumbai attacks outside the Taj Mahal Palace hotel two years ago Friday. (Rafiq Maqbool/Associated Press)

Prime Minister Manmohan Singh said the strength of the Indian people will conquer those threatening their way of life.

"We will never succumb to the designs of our enemies," he said. "We pledge to redouble our efforts to bring the perpetrators of this crime against humanity to justice."

The only gunman to survive the assault, Ajmal Kasab, has been sentenced to death in India, but none of the seven alleged masterminds arrested in Pakistan has been put on trial.

India repeated its demand that they be punished.

"Once again I call upon Pakistan to dismantle the terror machine operating with impunity in territories under its control and to bring all the perpetrators of the Mumbai terror attack to speedy justice," Indian External Affairs Minister S.M. Krishna said in a statement.

Officers flanked by special anti-terror vehicles marched through Mumbai on Friday morning from the Oberoi Trident Hotel, one of the attack sites.

Hundreds of students held a giant banner that read "The Great Wall of Mumbai," intending to show how the city remained defiant in the face of the attack.

Government ministers laid wreaths in a commemoration ceremony, while the father of a paramilitary officer slain in the attacks embarked on a bike ride from Bangalore to Mumbai to join a peace march. Families of the victims planned a candlelight vigil Friday evening.

Earlier this month, U.S. President Barack Obama stayed in one of the targeted sites, the Taj Mahal Hotel, and paid tribute to the attack victims in a speech that pledged solidarity with India against terror.