Rab has arrested Ataullah Abu Ammar Jununi, known as the commander-in-chief of the ARSA, and 10 others, conducting special drives in Narayanganj and Mymensingh.

Myanmar has blamed Arakan Army (AA) and Arakan Rohingya Salvation Army (ARSA) for the mortar shells that landed in Bangladesh territory in recent weeks.

When the former UN chief Kofi Annan wrapped up his year-long probe into Myanmar's troubled northwest on August 24, he publicly warned that an excessive army response to violence would only make a simmering conflict between Rohingya insurgents and Myanmar security forces worse.

The Arakan Rohingya Salvation Army or Arsa, an armed group that emerged in Rakhine state in 2013, has no sizable weaponry to sustain the struggle. But that is how things remain in the beginning – small but potent.