Five people have been killed after a roadside bomb blew up a United Nations vehicle in the southern Afghan city of Kandahar, police say.
Four Nepalis and one Afghan were reported to have been killed
Four of the dead are reported to be Nepalese UN workers, the fifth an Afghan driver.
Kandahar has seen an increasing number of attacks by the Taleban. No group has so far said it carried out the bombing.
UN officials confirmed there had been a bombing involving a UN vehicle as it was returning to base in Kandahar.
Police cordoned off the site of the blast, where reporters described a scene of carnage.
"Four Nepalis and one Afghan have been killed," Kandahar's provincial police chief Esmatullah Alizai told reporters.
Meanwhile, a separate blast at a school in the western city of Herat left at least four children dead and five others wounded, police said.
The blast was thought to have been caused by old ammunition buried in the grounds of the school, which had previously served as a military barracks.