Bangladesh has urged India to take measures to immediately stop the push-ins, stressing that such push-ins without due process would undermine mutual understanding between the two countries.
The Ministry of Foreign Affairs sent a letter on Thursday seeking due process and urging India to follow established mechanisms, said a diplomatic source.
Bangladesh said such push-ins fuel negative public sentiment and it would only accept those through proper channels if they are confirmed as Bangladeshi citizens.
Bangladesh also highlighted the importance of peace and stability along the border and noted that such push-ins are unacceptable and should be avoided.
Referring to reported push-ins from India, National Security Adviser Dr Khalilur Rahman on Wednesday said any push-ins should be done in a formal channel and Bangladesh's position is to welcome only its citizens with sufficient proof.
"This needs to be done in a formal channel," he said when a journalist wanted to know his comments referring to media reports.
"We are examining each case separately. Our decision is we will receive only if there is proof that they are Bangladeshi citizens," he added.
Khalilur Rahman said that such push-ins are not the right way emphasizing on formal channels.