JOHOR BARU, July 2 -- Johor police have arrested five individuals linked to a drug syndicate that used the WeChat mobile messaging app to coordinate deliveries to customers.

Johor police chief Datuk M. Kumar said a special operation was carried out across three separate locations in the city on June 19, between 12pm and 9pm, resulting in the arrest of three local men and two Vietnamese women.

He said more than RM2.95 million worth of illicit drugs were seized during the operation.

"During the raids, police seized 16.86 kilogrammes of ecstasy powder, 104 grammes of ketamine, 1,950 Erimin 5 psychotropic pills, 1,250 grammes of ecstasy pills, and 35 yaba pills.

"All the seized drugs, if released into the open market, could be used by 59,...