![](http://www.ecns.cn/hd/2022/04/27/b028e3b09758431fb769749429642f70.jpg)
Photo shows remains of the van that was carrying three Chinese nationals when it was hit by a bomb blast in Karachi, Pakistan, April 26, 2022. (Photo/Agencies)
Four people were killed and several others injured when a blast happened inside a university in Pakistan's southern port city of Karachi on Tuesday.
![](http://www.ecns.cn/hd/2022/04/27/d9e5ea8f8be54e9e9b948b6d23d92841.jpg)
Pakistani police officers and investigators examine a burned van at the site of explosion in Karachi, Pakistan, April 26, 2022. (Photo/Agencies)
![](http://www.ecns.cn/hd/2022/04/27/da932edb934a446c8396f27009c1c163.jpg)
Photo shows remains of the van that was carrying three Chinese nationals when it was hit by a bomb blast in Karachi, Pakistan, April 26, 2022. (Photo/Agencies)
![](http://www.ecns.cn/hd/2022/04/27/312c37e0cf814a15b794aeffec61a3d9.jpg)
Photo shows remains of the van that was carrying three Chinese nationals when it was hit by a bomb blast in Karachi, Pakistan, April 26, 2022. (Photo/Agencies)