GEORGE TOWN: A substance believed to be drugs has been found in the sachets of "durian white coffee" which were consumed by two Nepalese security guards.

George Town OCPD Asst Comm Anuar Omar said samples of the instant coffee mixture were sent to the state food safety and quality lab for tests after a medical officer lodged a police report following the incident.

"The samples were also sent to the Chemistry Department for analysis," he said in a statement on Friday (Feb 2).

ACP Anuar said an officer later confirmed that a substance, believed to be drugs was found in the sachets.

The exact type of drug, however, has yet to be identified.

It was reported that Penang Health director Dr Wan Mansor Hamzah said five patients received treatment at Penang Hospital between Jan 27 and 30 after consuming the said beverage.

The victims were admitted with severe fatigue after they allegedly drank the "durian white coffee" beverage.