United Nations, Nov 26 (PTI): As India marks the fifth anniversary of the Mumbai terror attacks today, it is "important" that the perpetrators of the "terrible crime" should be brought to justice, UN Secretary General Ban Ki-moon's spokesperson said.

The 26/11 terror attacks, in which 166 people were killed, was a "terrible crime, an awful terrorist attack," Ban's spokesperson Martin Nesirky told PTI here.

"certainly, it is important that those who were responsible are brought to justice. There has already been some action in that regard," he said

A commemorative event marking the fifth anniversary of the Mumbai attacks has been organised in New York today by the American India Public Affairs Committee along with the American Jewish Committee Asia Pacific Region.

Five years ago, 10 LeT terrorists launched coordinated attacks across key locations in Mumbai killing 166 people, including American citizens.

India has demanded that the perpetrators of the Mumbai carnage should be brought to justice and Pakistan should swiftly conclude the 26/11 trial of the accused.

It feels Pakistan is not making any progress in its investigation of the attack and those responsible for it.

In a meeting with his Pakistani counterpart on the sidelines of the UN General Assembly in September, Prime Minister Manmohan Singh had demanded effective action to bring to justice the perpetrators of 26/11 terror attack.

Sharif had told Singh that action would be taken against the perpetrators.