KABUL, Oct. 30 (Xinhua) -- At least 14 people including four civilians have been killed and 22 civilians wounded in bomb blasts in the insurgency-battered Afghanistan over the past 24 hours, officials said on Wednesday.

In the latest explosion, a motorbike went off in Spin Boldak district of the southern Kandahar province on Wednesday afternoon, wounding seven civilians, provincial police spokesman Jamal Barikzai said.

According to the spokesman, anti-government militants placed an explosive device in a motorbike and detonated it in front of a hotel in the bazaar of Spin Boldak district at 1:11 p.m. local time, wounding seven civilians, some in critical condition.

Similarly, an explosive-laden car drove by a militant in Mardyan district of the northern Jawzjan province on Tuesday evening exploded prematurely, killing 11 people including 10 militants and a civilian and wounding 12 civilians, provincial police chief Abdul Wahid Wajdan said Wednesday.

A mine planted by militants on a road in Mizan district of the southern Zabul province struck a car, killing three civilians and wounding three others on Tuesday evening, a statement of provincial police said Wednesday.

Afghan civilians mostly bear the brunt of war as 2,563 civilians had been killed and 5,676 others injured in the first nine months of the current year, according to a report of the UN Assistance Mission in Afghanistan (UNAMA) released recently.