A couple of hundred Rohingyas have gathered across the border in the last four days hoping to enter Cox's Bazar.
The Border Guard Bangladesh on Thursday came to know that over 200 of them were waiting near Shah Porir Dwip in Teknaf and intensified its monitoring on the area, Lt Col Asad-uz Zaman Chowdhury, director of BGB Battalion-2, told The Daily Star.
The BGB and coast guards are patrolling the Naf river, he added.
Abdul Motaleb Mater, a Rohingya community leader at Leda refugee camp in Teknaf, said he learnt from his family members and other contacts in Myanmar that many Rohingyas of several villages have gathered on the east side of the Naf to come to Bangladesh.
He added that he heard Myanmar army started another crackdown on Thursday on those villages, forcing many to flee.