A police officer said the body was thrown near Ishipur village under Barahat police station. The villagers noticed it and informed the police.
Kahalgaon Additional Superintendent of Polcie (ASP) Neeraj Kumar Singh said, "The sari-clad woman seems to have been around 28-year-old and was married. Her throat was slit with a sharp-edged weapon. We are trying to identify her. The body has been sent for postmortem."
The police said it seemed the woman was killed somewhere else and was dumped on roadside later on.
However, the ASP said the reason behind the crime will be known after postmortem.