A bomb has blown up a bus in Afghanistan killing at least 11 people and wounding dozens, officials said on Monday, the latest in a series of deadly blasts that has come as foreign forces withdraw.

The roadside bomb exploded late on Sunday in the southern province of Zabul, the provincial governor’s spokesman, Gul Islam Sial, said. Woman and children were among the wounded, he said. An interior ministry spokesman said 28 people were wounded.

There was no immediate claim of responsibility. Taliban insurgents did not immediately respond to a request for comment.

Early on Monday, a blast hit a minibus in Parwan province, just north of the capital, Kabul, killing two people and wounding nine, the interior ministry said.

Violence has been rising sharply in recent weeks after the US announced it would withdraw all of its troops by September 11. The Taliban announced late on Sunday they would declare a three-day ceasefire for the Id ul-Fitr holiday later this week.

The ceasefire declaration came two days after bombings outside a school in Kabul killed 68 people, most of them girl students, and injured more than 165 people.

Bajwa meets Ghani

The Pakistani army chief offered Islamabad’s support for the Afghanistan peace process in a meeting with President Ashraf Ghani in Kabul on Monday amid growing violence as the US withdraws its troops.

Pakistani army chief of staff General Qamar Javed Bajwa told Ghani that “a peaceful Afghanistan means a peaceful region in general and a peaceful Pakistan in particular” a Pakistani military statement said.