When the grieving father was holding the right arm of his deceased son, the boy's toes had a movement. He had been beheaded, so what caused his toes to move? Jerk reflex?

On June 17, 2014, Ali Imran, a 12-year-old boy, was kidnapped in Mazar-i-Sharif, Afghanistan by unknown people. His family found his beheaded body the next day on the roof of a neighbor’s house. Balkh provincial police reported to the media that the incident may have happened due to a family dispute, or as a matter of personal revenge.
Ali’s father is an ordinary citizen working as a taxi driver in Maza-i-Sharif; his mother is a teacher. No one from Ali’s family, extended or otherwise, has been involved with any political parties or had any connection to the military in Afghanistan.
Ali Imran was the youngest son of the family, he was in the 5th grade of elementary school. His mother has three other children and she is afraid because all her family may be in danger.
So far the Afghanistan authorities and his relatives do not have more information about this terrible crime against this child. The uncle of the boy is Mohammad Yahya, a human rights defender currently completing a Master’s in human rights at the Central European University in Budapest, Hungary.
Relatives call on the Afghani authorities to investigate this horrific crime and punish those responsible. Ali Imran was an innocent child. Both national and international non-governmental organizations demand justice and reparation for these egregious human rights violations.
There is persistent impunity for such crimes in Afghanistan, where similar gangs have the support of powerful local leaders and which police are unable to bring to justice. It was an appalling and shocking tragedy that happened in Mazar-i-Sharif, which has been one of the more peaceful cities of Afghanistan over the past decade after the collapse of the Taliban.
The Afghan people have experienced three decades of civil war, violence and oppression under the Taliban regime, which has caused the death of thousands of civilians, including numerous innocent women and children.