New Delhi - India expects Pakistan to take action and punish terrorists who attacked the financial hub of Mumbai last November, Indian Prime Minister Manmohan Singh said Tuesday.

Singh told reporters at the launch of the ruling Congress party's election manifesto in New Delhi that diplomatic efforts had succeeded and Pakistan had for the first time admitted that its citizens were involved in the terrorist attacks.

"We expect Pakistan to take the next step and ensure justice is done and culprits are punished," Singh said.

Asked whether India had any plans to attack Pakistan in the aftermath of the terrorist attacks, Singh said India believed that diplomacy should be given a chance and no purpose would be served by creating a war hysteria.

India has already handed over a dossier containing evidence linking Pakistan-based militant group Lashkar-e-Taiba (LeT) to the November 26-29 assault that left at least 170 people dead and over 300 injured.

Pakistan last month announced the arrest of six suspects in connection with the Mumbai attack, which it said were "partially planned" on its soil. The detainees included Zakiur Rehman Lakhvi, head of the LeT group. (dpa)