11.   Tissera told The Associated Press that according to initial reports the simultaneous explosions were caused by underwater mines.

12.   Tissera told The Associated Press that according to initial reports the simultaneous explosions were from underwater mines.

a. + mine >>共 316
anti-personnel 19.12%
anti-tank 5.88%
new 3.87%
antipersonnel 2.75%
copper 2.68%
abandoned 2.31%
small 1.93%
clear 1.93%
unexploded 1.86%
tin 1.64%
underwater 0.89%
underwater + n. >>共 404
camera 4.52%
search 1.87%
pipeline 1.65%
robot 1.54%
microphone 1.54%
cable 1.43%
world 1.32%
mine 1.32%
photography 1.32%
vehicle 1.10%
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