Taliban fighters have killed 12 more Afghan troops in the siege of a government building that has continued into its second day.
Meanwhile, around 100 Afghan soldiers fled their posts and tried to cross into neighbouring Turkmenistan during a weeklong battle with the Taliban in the western Badghis province.
The provincial governor's office said 16 other troops were wounded in the attack that began Friday and continued into Saturday in Wahser district.
The pre-dawn assault in Helmand province's Shorab military base, one of the largest military installations in the country, also left at least 20 insurgents dead, officials say.
Sixteen civilians from the same extended family killed by an air strike in Afghanistan's southern Helmand province, said an official.
Taliban says only civilians died in Helmand province raid but government officials say 16 fighters were also killed. Separately, Taliban attacked a Kabul-based security firm, killing 10 and wounding 19 others, "in response to air strikes."
Taliban claimed responsibility for the attack in the southern province of Helmand that killed Abdul Jabar Qahraman, who was preparing to contest Saturday's parliamentary polls.
Officials say the suicide bomber targeted election candidate Saleh Mohammad Asikzai's campaign office in the southern city of Lashkar Gah in Helmand province. There was no immediate claim of responsibility for the attack.
Officials say the attack took place in northern Sar-i-Pul province in which an Afghan Taliban commander was also killed. Separately, officials say Afghan forces freed at least 54 people from a Taliban prison in southern Helmand province.
Two separate attack by the Taliban have left at least 33 dead. The ongoing violence has led to the extension of a deadline for Afghans to register to vote in the October 20 legislative elections.
Mullah Shah Wali was the commander of Taliban's Red Unit and was directly involved in Taliban offensives.
No one has claimed responsibility for the blast which took place outside of a football stadium in Jalalabad city, capital of eastern Afghanistan's Nangarhar province.
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