Federal government contacts MQM leadership in London and took into confidence.
Foreign Office says the government is considering sending chartered planes to Libya to evacuate Pakistanis.
The MQM chief said the country was passing through a critical stage and all matters should be solved through dialogue.
Urges him to name successor; asks PTI, PAT to weigh risks of confrontation.
MQM chief urges prime minister do all he can to avoid loss of life, property, address complaints of opposition.
Dozens claim their relatives are still missing; Section 144 imposed at beaches.
ASI Naseem Malik is the fourth woman to be inducted at a male police station in recent months.
Conflicting numbers of those feared dead; relatives helplessly wait at Clifton beach.
The duo - flying around the world to raise money for underprivileged kids - died in a plane crash.
The plane crashed just two minutes after they took off from Pago Pago on their way to Honolulu, Hawaii.