Masoud Andarabi, who was sacked from his role in March, posted shocking and sickening images on Twitter of people, including children, allegedly killed by the Taliban.
Andarabi claimed that the Taliban “tries to rule over people by terrorizing, killing young children and elderly citizens” and added that the Taliban “cannot rule the nation” using terrorist methods.
The Taliban took control of Kabul last week after rampaging the country.
Troops are now embarking on a rescue mission to save thousands of people, however, the Taliban say NATO troops must withdraw by August 31.
Former Afghan soldiers, many of whom were trained by Western troops, forcibly joined local militias from a base northeast of Kabul. The group is fighting under the National Resistance Front of Afghanistan.
In his tweet, Andarabi said: “In Andarab, the Taliban carried out unwarranted searches of homes, capturing people for no reason or justification and killing innocent citizens.
“As a result, people have had to rise up against their brutality to protect their lives, honor, dignity and property. “
The photographs came after reports last week that Islamist militants were hunting down towns across Afghanistan for women and girls, the Daily Mail reports.
Jihadist commanders are said to have ordered imams in areas they captured to bring them lists of unmarried women and girls between the ages of 12 and 45 for their soldiers to marry, as they see them as “spoils of war” to be distributed among the winners.
Andarabi also warned in an interview with India Today that resistance to the Taliban regime will not go away.
He said: “I think there will be backs, pushes and resistance.
“It shows that if the Taliban do not adapt to Afghanistan today, this gashed resistance will continue to emerge. Resistance will continue in any form across the country. “
He added that if the Taliban want people to support their regime, they should form an elected government, not an undemocratic “emirate”.
Andarabi was sacked by former President Ashraf Ghani in March after he allegedly failed to arrest a militia commander whose security forces shot down a helicopter, killing nine members of the security forces.
The Taliban claimed earlier this week that they had recaptured three districts north of the capital Kabul seized the day before and surrounded Panjshit, the last province that remains out of their control.
They said they were negotiating with rival forces to secure the areas, but FNL foreign relations chief Ali Maisam Nazary tweeted “no one is going to give back the Panjshir and @ AhmedMassoud01 will defend the valley with all he has. “.
His statement was released after Massoud wrote in the Washington Post: “Whatever happens, my Mujahedin fighters and I will defend Panjshir as the last bastion of Afghan freedom.