SINGAPORE - Drugs, including 2kg of cannabis, were seized in an operation conducted by the Central Narcotics Bureau (CNB) on Tuesday (Jan 5). The haul was worth more than $89,000.

The operation was sparked by the arrest of a 41-year-old Singaporean man on Monday for suspected drug consumption and possession, CNB said in a press release on Wednesday.

Four Erimin-5 tablets, a type of depressant, were found in the suspect's possession and he was referred to CNB.

Following swift investigations, CNB raided the suspect's Kim Tian Road residence the next day, recovering about 997g of cannabis.

CNB then launched a follow-up operation on the same day at 8.50pm, raiding the residence of the suspect's drug associate at Segar Road.

A 42-year-old Singaporean man was arrested, while about 1,015g of cannabis, 125g of Ice, 16 Emirin-5 tablets and various improvised drug-smoking apparatus were discovered by CNB officers.

Investigations into the drug activities of both suspects are ongoing, CNB added.

Those convicted of trafficking in more than 500g of cannabis may face the death penalty.

According to CNB, 1kg of cannabis is enough to feed the addiction of about 143 drug abusers for a week.

A Task Force on Youths and Drugs, which reviewed Singapore's drug situation in June last year, said cannabis is addictive, harmful and its use could lead to the abuse of other drugs such as heroin and methamphetamine.

In a separate incident on Monday evening, 400g of cannabis worth over $15,600 was seized from a car at the Woodlands Checkpoint.

A 27-year-old Malaysian man was arrested by the Immigration and Checkpoints Authority and taken to CNB for further investigation.

Correction: An earlier version of this article stated that CNB launched its follow-up operation at Segar Road at 8.50am. It should be 8.50pm. We are sorry for the error.