Two more suspects have been arrested in connection with an armed gang robbery two years ago.
The gang had robbed a money changer of more than $620,000 at the open-air carpark of Block 110 in Aljunied Crescent, just before 1am on Nov 5, 2014.
With the help of the Malaysian police, the two suspects were arrested in Malaysia and handed over to the Singapore police on Tuesday.
The male suspects, aged 29 and 30, are the fifth and sixth suspects in the case. They will appear in court today, said the Singapore police yesterday.
"I would like to thank the Royal Malaysia Police for pressing on with their efforts to locate the suspects behind this serious crime which occurred in November 2014," said Deputy Commissioner of Police (Investigations and Intelligence) and director of the Criminal Investigation Department Tan Chye Hee.
"With the strong assistance from our foreign law enforcement partners, the police will persevere and ensure that criminals who remain on the run will be brought back to justice no matter how long it takes," he added.
Two bags with a total of $624,036 in local and foreign currencies were taken from money changer Ali Yousouf Saiboo, then 35, who worked for his father-in-law's money-changing business at The Arcade.
On the day of the robbery, he decided to keep the money at his father-in-law's home in Aljunied Crescent but was ambushed in his car by five men clad in balaclavas and face masks, with plasters stuck on their fingertips.
Mr Saiboo, who was with his toddler son in the car, locked the doors. But one of the robbers shattered the window on his side with a crowbar, while another dragged him out and assaulted him. A robber also threatened to kill his son.
The robbery is believed to have involved eight men.
In January, Ravi Sandhira Sagaran, then 28, was sentenced to seven years' jail and 12 strokes of the cane.
The following month, Annadurai Raman, then 43, was given the same sentence, while Tachana Moorthy Peromal, then 29, got nine years and 12 strokes of the cane. A fourth robber, Selvam Karupaya, 31, was charged in April.
Two remaining accomplices, both Malaysians, are still at large.
None of the money has been recovered.