Two police vehicles on Saturday vandalised by unidentified men on Kurseong's Gayabari area of Darjeeling.
Earlier, on the 31st day of the indefinite shutdown for a separate state, Pro-Gorkhaland activists took out rallies in Darjeeling as security forces maintained tight vigil across the hills.
The hills remained on the edge, a day after agitators went on a rampage, setting afire an RPF office, a state-run library and a police outpost in Darjeeling.
The hills witnessed violence despite continued deployment of three columns of the Army in Darjeeling, Kalimpong and Sonada.
The picturesque hill station had earlier witnessed a 40-day bandh in 1988 and a 44-day shutdown in 2013.