Muttahida Qaumi Movement (MQM) Chief Altaf Hussain has expressed his deep sorrow and grief over the deaths in Turkey mine blast. In a statement issued by MQM here on Thursday, Altaf said "this is the worst mining disaster in the history of Turkey which has left so many people dead. The tragic incident has aggrieved him." "We share the grief of our Turkish brothers and we are with them in this time of grief and pray for the victims," he said.