Police detained two men in raids in Shah Alam and Sentul to assist investigations on a robbery case at a jewellery outlet by a security guard at the KL Festival City shopping complex, Setapak here.

Kuala Lumpur CID deputy chief (Operations and Intelligence) ACP Khairi Ahrasa said they were detained at their homes.

He said, in the first raid, a 26-year-old man, believed to be the suspect's friend, was detained at 9pm, last Thursday.

He said in a follow up operation, police arrested another man, aged 51, believed to be the supervisor of the security guard.

"We believe the detention of the two men can help police detect the main suspect," he told Bernama, adding the two men were remanded one-week from today.

In the incident, the security guard was reported to have escaped with 100 gold chains after threatening four workers of the jewellery shop at gun point.