The prosecution had filed an application in the Islamabad High Court seeking voice samples of the suspects to compare it with the communication intercepted by Indian intelligence and then present it before the anti-terrorism court (ATC) as evidence against the seven suspects in the Mumbai attack case.

The Islamabad High Court on Monday dismissed the petition. In 2011 and 2015, the issue of obtaining voice samples of Lakhvi had been dismissed by the trial court on the grounds that "no such law exists that allows obtaining of voice sample of an accused".

The prosecution's petition said the Indian intelligence agencies had intercepted communication between the suspects and the terrorists in connection with the Mumbai attack in 2008.

The trial court had also rejected another petition of the prosecution requesting the court to declare Ajmal Kasab and Faheem Ansari absconders in order to meet legal formalities.

Pakistani authorities arrested seven Lashkar-e-Taiba (LeT) members involved in the planning of the attacks including the terrorist group's operations commander Zakiur Rehman Lakhvi, the mastermind of the Mumbai attack.

Six accused - Abdul Wajid, Mazhar Iqbal, Hamad Amin Sadiq, Shahid Jameel Riaz, Jamil Ahmed and Younis Anjum -- have been in Adiala Jail for more than six years in connection with planning and executing the Mumbai attack in November, 2008, that left 166 people killed.

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