KUALA LUMPUR (THE STAR/ASIA NEWS NETWORK) - Four men have been arrested in connection with the grenade attack at Cherry Blossom nightclub at Bukit Bintang last week.

Inspector-General of Police Tan Sri Khalid Abu Bakar said the men were picked up on Wednesday night. He declined to release further information as the police needed time to investigate.

It is unclear if those detained are part of an underworld gang. They were being detained at the city police headquarters.

The blast at about 4.25am on Oct 9 has been linked to a turf war between rival gangs, killing 36-year-old Malaysian car jockey Tiong Kwang Yie and injuring 12 others.

A Toyota Alphard, Toyota Camry, Mazda and BMW were damaged in the blast.

The injured, aged between 31 and 56 years old, included a Thai man, a Singaporean male, and four women Chinese nationals.

The 12 injured were sent to the Kuala Lumpur Hospital and most have been discharged.