Today, at least 70 people, mostly female students have been killed and scores injured in a double bombing at Baghdad University.
The BBC's Mike Wooldridge in Baghdad says the bombers apparently attacked at the front and rear entrances of the university building, catching many of the students as they emerged from classes.
A car bomb exploded followed by a suicide bomber who blew himself up among people fleeing the first blast in the predominantly Shia area, police said.
Pictures from the campus showed a scene of devastation, with wrecked and blackened vehicles scattered across a wide area.
"The majority of those killed are female students who were on their way home," Reuters news agency quoted a university official as saying.