KUALA LUMPUR - Malaysian police said Saturday that four individuals, including a married couple, were arrested for suspected link to the Islamic State (IS).

One of the suspected IS member was arrested on Friday at a light rail train (LRT) station in downtown Kuala Lumpur, not far from the iconic Twin Towers, an area often gathers many foreigners, police chief Khalid Abu Bakar said in a statement.

The 28-year-old admitted that he was planning a suicide attack after receiving other IS members in Syria, according to the statement. Police also believes that the man was responsible for putting up IS flags in several regions in Malaysia, intended to warn the authorities against taking actions on IS members.

The other three suspects were arrested upon their arrival back in Malaysia after being repatriated by the Turkish Authorities.

Police said the three had joined IS and were arrested in Gaziantep, Turkey when trying to sneak into Syria. They were recruited by a Malaysian militant who had joined IS in Syria through social networking site.

Police said they had been on highest alert following the bombing attacks in Indonesian capital city of Jakarta on Thursday. Authorities said more than 40 Malaysian were believed to be fighting for IS in Syria and Iraq at present.