Pakistani groups on Saturday demanded that Malik Ishaq, Leader of extremist militant group, Lashkar-e-Jhangvi (LJ), be put on trial, a day after he was arrested following deadly attacks in the city of Quetta.

Pakistani Shiites on Saturday demanded that Malik Ishaq, Leader of extremist militant group, Lashkar-e-Jhangvi (LJ), be put on trial, a day after he was arrested following deadly attacks in the city of Quetta.

Ishaq was held on Friday after two recent bombings in the southwestern city that left 180 people killed and hundreds injured, sparking nationwide protests.

The outlawed militant group, linked to both Al-Qaeda and the Pakistani Taliban, claimed responsibility for both attacks.

"We have always been demanding arrest of all those involved in any act of sectarian violence, irrespective of their party affiliation," AFP quoted Abdul Khaliq Hazara, Leader of the Hazara Democratic Party.

"Ishaq must be brought to justice and punished for involvement in violence," he added.

Ishaq, who has been arrested before, was released by a court on bail in July 2011, even though he has been implicated in dozens of murders.