Imphal, Oct. 21 -- Unidentified assailants killed a 45-year-old Kuki man in ethnic violence-hit Manipur's Kangpokpi district on Tuesday, even as around six Kuki houses were set ablaze in Ukhrul and a shutdown was imposed to protest against the killing of three Meiteis in an ambush in Imphal East on Monday. The shutdown largely affected five Meitei-dominated districts in Imphal Valley. Residents said two people were collecting bamboo shoots when the assailants fired at them in Kangpokpi, killing Paolen Khongsai on the spot. The second person had a narrow escape. Local bodies and village volunteers issued a warning asking people to refrain from moving in forested and isolated areas due to the suspected movement of armed men as police rushed to the spot for investigation. In a statement, the Ukhrul police said the houses were burnt at Patleijang, a Kuki village. It added that the arsonists fled and no casualties were reported. "The identity and number of perpetrators and the circumstances leading to the incident could not be ascertained. The motive behind the crime also remains unknown," the statement said. Police said they registered a case under relevant sections od the Bharatiya Nyaya Sanhita . People residing along National Highway (NH) 202, connecting Imphal with Nagaland via Ukhrul, and civil society organisation Native Peoples Committee Manipur imposed the 48-hour shutdown from Monday evening....