Lahore: Chief Minister Punjab Maryam Nawaz Sharif termed sacrifices of martyred Major Rizwan Tahir, Naik Ibne Amin and Lance Naik Muhammad Younis as immortal, while paying rich tribute on their martyrdom in Mastung blast. She also praised security forces for killing 04 terrorists, besides strongly condemning an explosion near their vehicle. She offered condolences and extended her heartfelt sympathies to the bereaved families.