None of the seven men arrested in Pakistan on charges of planning and executing the three-day assault — which began two years ago Friday — has been put on trial.

In a message conveyed to Pakistan’s envoy in New Delhi, India expressed its frustration that Islamabad had not followed up on intelligence given to it about the men, who allegedly belong to Lashkar-e-Taiba, a Pakistan-based militant group.

Despite repeated assurances given by Pakistan’s leadership, “substantive and verifiable progress has not been made on bringing all the perpetrators and masterminds of the heinous attacks to justice,” India’s Ministry of External Affairs said in a statement.

It urged Pakistan to announce a time by which it would take action against the suspects.

Fulfilling that pledge would help build trust and confidence between the countries and demonstrate Pakistan’s commitment to combating terrorism, the ministry said.

Pakistan’s government had no immediate response to India’s criticism, but Foreign Ministry spokesman Abdul Basit said the legal case against the suspects was continuing.

“We are committed to bring the perpetrators of the Mumbai terror attack to justice,” Basit said at a regular briefing Thursday.