YANGON, March 19 (Xinhua) -- Myanmar security forces continued to launch offensives against an ethnic insurgent group in western Rakhine state days after an ambush, the Office of the Commander-in-Chief of the Defense Services Tuesday.

The security clashed with the Arakan Army (AA) group of 10 militants in Mrauk U on Thursday, who ambushed a military convoy with remote-controlled mines on Mrauk U-Kyauktaw road.

In the fighting, a suspect was arrested with an improvised explosive device found in the tool box of his motorcycle.

On Friday, a military convoy was attacked by a 30-strong AA in Mrauk U and Kyauktaw, prompting the security forces to attack an AA base at Point-802 hill near border post BP-67 on Sunday.

Some AA members were killed in that clash and arms and ammunition were seized by the security forces.

Meanwhile, AA also attacked a civilian vessel on Saturday loaded with steel frames, setting fire on it and abducting the crew members in Paletwa township, Myanmar's western Chin state.