IMPHAL, July 16 -- Four people have been arrested from Manipur's Kamjong district in connection with the ambush in Ukhrul that killed two Assam Rifles personnel, even as tensions erupted in Senapati district following an alleged confrontation between Assam Rifles personnel and the military wing of the National Socialist Council of Nagaland (NSCN) at Huthrong bridge in Oklong village, officials said on Wednesday. The four were arrested during an operation conducted at Sharakphung (Sikibung) village, TM Kasom and Lungphu village in Kamjong district on Tuesday, Officials added. In a press statement, the Tangkhul Naga Long (TNL) Working Committee, a Naga body, claimed that the arrested men were innocent villagers. The four suspects have been shifted to the Porompat police station, Imphal East, however the exact reason for their arrest is yet to be ascertained. On July 6, two Assam Rifles personnel, warrant officer Balwan Singh and havildar Chandra Mohon Singh were killed in an ambush carried out by unknown armed miscreants at Nungshang Khong village in Ukhrul district. Preliminary investigations indicated that suspected militants had planted three improvised explosive devices (IEDs) along both sides of a bridge on the convoy's route. As the convoy crossed the area, two of the IEDs exploded, followed by heavy gunfire from multiple directions. Meanwhile, in a separate incident, an irate mob attacked an Assam Rifles camp in Senapati, vandalising at least four vehicles....