Singapore's investment in Johor dropped like a stone in 2006. In the first eight months, Singaporean investment in the state stood at only RM208.9 million. This is only a mere 11 percent of the total investment from Singapore last year, which was RM1.9 billion.

Malaysiakini examines the problems confronting Johor in this three-part series.

S'pore investors turn away from Johor

Still hopeful of a windfall

Johor not conducive for investment