Punjab Chief Minister Shahbaz Sharif has expressed deep sense of sorrow and grief over the death of sister of Yousaf Raza Gilani, former Prime Minister and mother of Irfan Iqbal Sheikh, prominent trader and Chairman PIAF. In his separate condolence messages, the Chief Minister prayed that may Allah Almighty rest the departed souls in eternal peace and grant courage and strength to the bereaved families to bear the irreparable loss with fortitude.