Customs officers in Yunnan province confiscated more than 56 kilograms of illegal drugs as they thwarted three attempts to smuggle drugs across the border in the last four months, authorities said on Wednesday.

Nine suspects were arrested, said the authorities.

The suspects were allegedly trying to smuggle methamphetamine, a synthetic drug, across the Chinese border from Myanmar before they were caught by the officers, customs in Kunming, capital of Yunnan, said in a statement.