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Official sources said the satellite imagery has located strong metallic presence near the Indo-Bhutanese border, 2.5 km inside Bhutan.
Bhutan government has already allowed ITBP, SSB and Arunachal Pradesh Police to enter its territory.
The sources said nothing has been found in an earlier location within a 66 sq km area in West Kameng district, where the ISRO satellite imagery had found traces of several metallic objects.