Banda Aceh, Aceh, June 5 -- Security officers at Sultan Iskandar Muda International Airport in Aceh thwarted two separate attempts to smuggle nearly four kilograms of methamphetamine, resulting in the arrest of four suspected couriers, police said.

"Following further investigation into the two cases, we have detained four suspects and seized nearly four kilograms of methamphetamine," Banda Aceh Police Chief Senior Commissioner Andi Kirana told reporters on Friday.

The first case was uncovered on April 15 when airport security officers detected suspicious images on an X-ray monitor while screening a passenger's suitcase. A search uncovered 12 packages of methamphetamine weighing a total of 1,976 grams.

Security personnel seized the narc...