These developments are said to complement the twin towers, and are unlikely to be taller than the iconic buildings.

And while the new towers will bring in additional office, retail and hotel space into the Golden Triangle area, sources said that the ultimate shareholder, Petroliam Nasional Bhd (Petronas), has taken pains to ensure that it does not suffer from any market risk.

Two of the three towers are being jointly developed by KLCC (Holdings) Sdn Bhd, which is the unlisted parent of the KLCC Stapled Group and also 100%-owned by Petronas, together with Qatari Diar Real Estate Investment Co, the investment arm of the Qatari Investment Authority, in a 50:50 venture.

One of the towers will have an anchor in the form of a hotel group.

The third tower will be the new corporate headquarters of a local oil and gas (O&G) group, which according to sources, has long been working on this deal.

Meanwhile, plans for a new tower near Menara Dayabumi in Kuala Lumpur, which were first announced in 2013, will see a new 80-storey block being built where the current City Point shopping centre is, which will be demolished, sources said.

This development will also include a luxury hotel as well as new office space.

According to sources, the new office space will be largely taken up by the needs of Petronas for its back-end services.