At least seven people have been killed and 29 others injured in twin bomb blasts at a university in the Pakistani capital, Islamabad, police and witnesses say.
The explosions occurred within minutes of each other at the International Islamic University in the eastern part of the city on Tuesday.
The Pakistani Taliban has denied responsibility for the attack.
The blasts at the university hit the women's cafeteria and the Islamic law department.
Abdul Ghafar Quaiserani, a police official, said the "two suicide bombers struck at about the same time."
'State of war'
"Seven people including two suicide bombers are dead, and 29 injured in the two attacks," Rana Akbar Hayat, a senior city administration official, told the AFP news agency at the scene of the attack.
Pakistani schools and colleges have closed because of fears about further attacks following Tuesday's blasts, officials said.
'Charred flesh'
Broken glass and pieces of charred flesh littered the faculty building's first floor, where blood dripped down the stairwell and students stepped through the debris, choking under thick smoke, an AFP reporter said at the scene of the blasts.
Al Jazeera's Alan Fisher, reporting from the scene, said: "We can see bits of clothes, scraps of books and a lot more worrying, very thick, dark red blood.
"There's a thick heavy smell of smoke hanging in the air and every step we take have been punctuated by the sound of broken glass.
"The windows have been buckled, and the walls have fallen in ... looking at the extent of the damage, I can understand why [the toll] may possibly rise."
The Associated Press news agency said the International Islamic University was established on the outskirts of the city in the 1980s and has more than 12,000 students - nearly half of them women, many from abroad.
Analysts say armed fighters opposed to the government are likely to step up attacks to avenge the offensive in South Waziristan.
PHOTO CAPTION
Pakistani investigators collect evidence at the suicide blast site at Islamic International University in Islamabad.
Al-Jazeera