Militants seen moving around openly and instigating mobs in Imphal valley cause of concern for security agencies

economictimes.indiatimes.com:

Imphal valley which have been on a rampaging spree after pictures of two missing teenagers surfaced on social media. According to officials, during attacks carried out on a police party Wednesday evening, armed men dressed in black uniform were seen giving directions to the agitated youths to attack the police and many vehicles were then torched.

The security agencies have been warning that militants belonging to United National Liberation Front (UNLF), People's Liberation Army (PLA) and other banned groups had become part of the mobs and carrying out sneak attacks on security forces as well as giving directions to the agitators.
Recently, the presence of insurgents was found within a mob that carried out an attack on security forces injuring a Lt Col of army near Pallel in Tengnoupal.

As reported by PTI on September 11, central security agencies had warned about the possibility of militants mingling with crowds during any protest to stoke tensions in restive Manipur.
The burning down of a police vehicle saw the presence of armed militants directing the crowd.

Besides this, miscreants in the crowd used iron pieces which were fired towards security personnel with the help of automated slingshots.
Over a dozen police personnel including an officer of the rank of additional Superintendent of Police have been injured in these clashes that erupted in Imphal valley after surfacing of pictures of missing teenagers, who are suspected to have been killed during the ethnic clashes.