The case was registered on April 13 on the basis of the video which was believed to have been shot on April 9 when by-polls were being held for Srinagar's parliamentary seat, reports said.
The Army said it is investigating the video which was shot near a Beerwah village, "In reference to the video showing a young man tied to an army jeep, the contents of the video are being verified and investigated", a Srinagar-based defence spokesman said.
Sources said that even the chief minister was aghast at the "disturbing videos" and has directed the police to "submit a detailed report about the incidents so that necessary action is taken".
Dar, who comes from an area of Kashmir that historically has not been especially supportive of the militancy, said he would no longer express his support for India's government by participating in elections.
In the clip, an army soldier could be heard saying, "Those who throw stones will meet the same fate".
"Using youth as human shield is very unfortunate". In the video, jawans, who were reportedly returning from a poll booth, were seen getting kicked and slapped by the Kashmiri youth.
"What Farooq Ahmad Dar was subjected to is cruel, inhuman and degrading treatment amounting to torture", said ZahoorWani, Senior Campaigner at Amnesty International India.
A video has created flutter in Jammu and Kashmir after the Army allegedly used a youth as shield to get protection from stone pelting.
Over the weekend, another video, allegedly showing the killing of a 17-year-old by paramilitary officers, circulated on social media rousing further anger.
Asked about the video that surfaced on social media on Friday, Rajnath Singh said in Kolkata: "Whatever and wherever any such thing happens, it will be looked into".
Former Chief Minister Omar Abdullah also took to his Twitter account and slammed the video.
According to Live Mint, there's been an alarming increase in Kashmiri youths joining militant groups, especially after the death of Burhan Wani, a commander of the Kashmir-based militant outfit Hizbul Mujahideen killed in July 2016. Eight people were killed in violence that day in Budgam, the district where Dar lives, and violent unrest was reported throughout the region. "For five hours and 15 minutes, from 11 am to 4.15 pm, I was tied to the army jeep and was driven through different villages, for about 27 kilometres".