police arrested five men and sealed off the mosque 's headquarter for hours . MQM is based in Karachi and is one of Pakistan 's largest political parties . Businesses , petrol stations and shops were closed in Karachi due to raid aftermath .
Rangers arrested five men and sealed off the party 's headquarter for hours . MQM is based in Karachi and is one of Pakistan 's largest political parties . Businesses , gas pumps and schools remain closed in Karachi due to raid aftermath .