Police said the duo were arrested from Zargaon following a tip off and the duo confessed that they were involved in poaching activities for quite sometime in the sanctuary.
Their interrogation is on, the police added.
There are about 86 rhinos in Pabitora wildlife sanctuary, which stretches across 36 sq km area and is situated only about 35 km away from here.
The sanctuary has the world's highest density of the endangered one-horned rhinos.
There are abut 86 rhinos in the park.
