An islandwide operation conducted from over four days ended with 106 arrests and more than $100,000 worth of drugs seized.

The Central Narcotics Bureau in a statement on Friday said that drugs seized included about 400g of heroin, more than 200g of 'Ice', 546 Ecstasy pills, 691 Erimin-5 pills and about 40g of ketamine.

The operation was conducted in many areas including Ang Mo Kio, Boon Lay, Choa Chu Kang, Circuit Road, Commonwealth, Eunos, Henderson, Hougang, Geylang Serai, Pasir Ris, Tampines, Woodlands and Yishun.

Officers from the Singapore Police Force were also involved in the operation and investigations are ongoing.