ISLAMABAD, Pakistan (CNN) - Back-to-back suicide bombings killed at least five people at a university here Tuesday and wounded nearly two dozen, authorities said.
The explosions occurred at the International Islamic University in the Pakistani capital, said police official Bin Yamin.
Naeem Iqbal, Islamabad police spokesman, said three men and two female students were killed, and 22 people were injured.
At least four of the injured were in critical condition, said Altaf Hussein, a doctor at a hospital. All the victims are between the ages of 18 and 25.
Usman Virk, a student, said he heard one explosion in the men's section of the university, followed by a blast in the cafeteria in the women's section of the university.
Virk said he saw several injured students with blood-soaked clothes being taken away by rescue crews.
More than 12,000 foreign and local students, including 5,500 women, are enrolled in the 29-year-old university.