Police in southwest China's Yunnan Province have seized 30.96 kg of methamphetamine in two drug trafficking cases.

After receiving a tip-off in early July, police in Changning County dispatched task forces to the China-Myanmar border city of Pu'er.

On July 6, the police arrested five suspects in Pu'er and seized 40 packages of methamphetamine weighing about 22.19 kg hidden in the trunk of a vehicle.

Police busted the other case in Lancang County, the city of Pu'er on the same day, finding 15 drug packages weighing about 8.77 kg from a truck.

Further investigations into the cases are underway.

Yunnan is a major front in China's battle against drug crime, as it borders the Golden Triangle notorious for its rampant drug production and trafficking.