Five persons from Bihar were injured, three hutments torched, and railway property at Tinsukia was damaged in separate incidents of violence, apparently in retaliation to the attacks on Assamese train passengers in Bihar over the last few days.

Guwahati Superintendent of Police Hiren Nath told the Press Trust of India that some people, as yet unidentified, attacked a group of students from Bihar this morning at the Guwahati railway station.

In the scuffle two persons were injured, but they were not from among the students, Nath said.

Three huts on the hills near Gauhati University were set ablaze last night, but no one was injured, he said.

Some roadside shops near the Nehru Stadium in the city were also attacked yesterday and three persons received minor injuries. Some agitated youths also damaged railway property at Tinsukia yesterday, official sources said.

Meanwhile, the state government has instructed senior police officers to step up security arrangements in the Bihari settlements, the sources said.