The houses were burnt down at around 5 pm at Bangtol area, a senior district police officer said.
However, there was no report of any injury to any person.
Police and BSF personnel have been rushed to the spot and the situation is being closely monitored, the officer said.
Night curfew continues in affected Chirang, Kokrajhar and Dhubri districts.
Earlier in the day Chief Minister Tarun Gogoi said steps have been taken to facilitate the return of the displaced people to their homes by August 15 and the government transferred Kokrajhar superintendent of police Jitmol Doley.
Kokrajhar (Assam): After a few days of calm in the strife-torn areas of lower Assam, four houses were burnt down by miscreants at Dhaligaon in affected Chirang district on Wednesday.
First Published: Wednesday, August 01, 2012, 21:18