The plane, which was flying at a low height, was spotted and reported by the Border Security Force (BSF), guarding the International Border.
In its report, the BSF said a six-winged, silver coloured flying object was seen from its border post that crossed into the Indian air space around 1:10 PM and returned within no time, official sources said.
They said a report in this regard has been sent to the BSF headquarters in Delhi.
However, the IAF said its radars had not picked up any such signal.