After arresting key Muttahida Qaumi Movement (MQM) leaders, including Dr Farooq Sattar and Amir Liaquat, Sindh Rangers on Monday sealed MQM stronghold Nine Zero after confiscating communication equipment.

According to local media reports, a heavy contingent of the paramilitary force arrested three party activists from Nine Zero. They also took control of the headquarters’ control room.

Earlier, Sindh Rangers Director General Maj-Gen Bilal Akbar had said the paramilitary force will release Muttahida Qaumi Movement (MQM) leader Dr Farooq Sattar after taking his statement.

The paramilitary force arrested Dr Sattar and Khawaja Izharul Hassan when the two were about to hold a press conference in wake of the attack on ARY News office in Karachi’s Saddar area.

Major General Akbar said that the paramilitary force will examine camera footage to identify perpetrators of the attack. “We won’t let anyone sabotage law and order in Karachi,” said the Rangers chief.

The paramilitary force also arrested several other Muttahida activists, including Amir Khan and Sajid Ahmed. Media reports say the arrested MQM activists will record their statements.

The development comes after one person was killed and five others injured after violent protesters stormed the office of ARY News.

The private news channel has alleged that the protesters were members of Muttahida Qaumi Movement (MQM). ARY News further reported that the protesters entered the building and attacked the staff.

According to TV channels, MQM chief Altaf Hussain in his speech earlier today told protesters "to storm the offices of TV channels".

Earlier, Chief of Army Staff General Raheel Sharif directed Sindh Rangers Director General Maj-Gen Bilal Akbar to arrest those involved in the attack on ARY News office.

The army chief had a telephonic conversation with Major General Akbar in which he ordered the Rangers chief to maintain law and order situation in Karachi.