Malaysia, Singapore’s biggest source for sea sand, has banned the export of the commodity, according to officials in Kuala Lumpur, a move that traders said could complicate the island-state’s ambitious expansion plans on reclaimed land.

Malaysia, Singapore’s biggest source for sea sand, has banned the export of the commodity, according to officials in Kuala Lumpur, a move that traders said could complicate the island-state’s ambitious expansion plans on reclaimed land.