The incident took place at Chauldhowa village, about 40 km from Lakhimpur town.
"According to locals, about four CRPF personnel forcibly took the physically challenged woman, who was passing by the CRPF camp on NH 52 in the area to the nearby jungle," an official said.
Some locals raised an alarm. While they managed to catch Mohan Singh, the others fled.
"We have sent the victim for medical examinations," an official said, adding that there was no arrest as no one had filed a first information report (FIR) on behalf of the victim.
On Thursday, police had also arrested a senior Congress leader in Chirang district of Assam's Bodoland Territorial Areas Districts (BTAD) for allegedly attempting to rape a woman.