The army detained two suspected members of hill tracts-based political party United People's Democratic Front (UPDF) with firearm - a M4A1 carbine - and bullets from Guimara Upazila in Khagrachhari on Tuesday, reports UNB.
The army raided Rainnamachhara area after being tipped-off about plans to create unrest in the hills after the national election.
"A Lakshmichhari zone army patrol detained Sumanta Chakma, 20, and Dipankar Chakma, 22," local police station's in-charge Abdul Jabbar said.
They were handed over to Lakshmichhari police.
A foreign-made firearm, a magazine, 53 rounds of bullets, a machete and several mobile phones were recovered from them.
"Sumanta and Dipankar are active members of UPDF," the police officer said. "They were involved with terrorist activities."
The UPDF has rejected claims that the arrestees were its activists.