Three Afghan children were killed Friday by a mortar left over from a battle between police and Taliban, as bomb attacks and clashes left 28 more people dead, most of them insurgents, officials said.
There has been a steady increase in attacks and clashes across Afghanistan in recent weeks as US military reinforcements move into the south and Afghan forces target insurgent hotspots ahead of August 20 presidential elections.
The children, aged four to 10, were killed Friday when they touched a mortar shell left over from an exchange of fire the previous day between Taliban and police in the central province of Ghazni, police said.
Another child was wounded, said provincial police chief Khial Baz Sherbaz.
Two roadside bombs exploded an hour apart in separate areas of the eastern province of Nangarhar today, killing six policemen, provincial government spokesman Ahmad Zia Abdulzai told AFP.
Also in Nangarhar, a man was killed late Thursday by a bomb he was trying to plant inside a university faculty, the official said.
No one claimed the responsibility for the bombings. Most of the almost-daily bomb blasts in the country, however, are linked to an insurgency being waged by the extremist Taliban, who were in government from 1996 to 2001.