Those pushed included six men, six women and seven children.
Lt Col Mohammad Nazmul Haque, commandant of Border Guard Bangladesh (BGB)-48 Battalion in Sylhet, said the BSF pushed the people through Jaintapur upazila border around 5am.
On information, the BGB personnel went to the scene and detained them for intrusion, he said, adding that they were later handed over to Jaintapur Police Station later.
Despite repeated objections from Bangladesh, the push-ins by the BSF continued along the borders, reports UNB.