A government lawyer says a Pakistani court has ordered the release of the main suspect in the 2008 Mumbai terror attacks because it found no solid incriminating evidence and also a three-month detention period has expired.

But lawyer Jahangir Jadoon said Zaki-ur-Rahman Lakhvi is unlikely to be released because he is still being held in a separate kidnapping case.

Lakhvi is one of seven suspects being tried by Pakistan in connection with the attacks, which killed 166 people and seriously damaged relations between Pakistan and India.

Jadoon said the Islamabad High Court on Friday ruled that Lakhvi could go free if he was not wanted by the government in another case.

Lakhvi was detained in December after a court granted him bail in connection with the Mumbai case.