A women's university in southwest Pakistan, which was attacked on Saturday, is now closed until further notice.
Sardar Bahadur Khan in Quetta was the only women's university in Baluchistan province.
Fourteen students were killed and many more wounded by a female suicide bomber on a university bus.
Gunmen then killed 11 more students in a siege at the hospital treating the wounded.
The Lashkar-e-Jhangvi group said it carried out both attacks.
Police say they have found the severed head of a woman at the scene. However, correspondents say that the use of women as suicide bombers in Pakistan is rare.
In January at least 81 people, mainly Shia Muslims, were killed in a bomb attack on a snooker hall in Quetta. And almost 90 were killed in February by a bomb in a marketplace in a Hazara Shia part of the city.