A section of Manipur Police commandos has started an "arms down" protest over allegations that senior officers asked them to restrain themselves after some 200 members of an armed group shot at and vandalised the house of a senior police officer in the state capital Imphal on Tuesday night. The commandos are upset they were allegedly told not to respond with effective fire at the armed group, whose members also kidnapped Additional Superintendent of Police Moirangthem Amit and his security guard, people with direct knowledge of the matter said.