A gun and bomb attack near a women's university, and ensuing siege at a nearby hospital, in Quetta has killed at least 24 people, including 14 female students, and wounded dozens of others, police and local officials say. The first explosion happened on a bus near the campus of the Sardar Bahadur Khan Women's University, with a bomb hidden in the vehicle, reports said. The second blast struck the casualty ward of the Bolan Medical Complex, and firing continued in the aftermath. At least eight unidentified gunmen were reported to have taken positions in the hospital, and killed at least four security personnel who were attempting to resecure the facility and three nurses, local officials said. Al Jazeera's Osama bin Javaid reports.