Jail guards opened fire during a clash with a section of prisoners at Chattogram Central Jail Friday afternoon.
The guards fired to control the situation when some prisoners and detainees staged demonstrations and tried to break open a room at the jail.
The clash broke out around 2:00pm and continued till 2:40pm, he said. Army men reached the spot and brought the situation under control around 3:00pm.
Two injured people were seen being taken by army, but their identities could not be known. None of the prisoners could escape. A tense situation was prevailing in the area.