Former Malaysian prime minister Mahathir Mohamad has been admitted to a specialist heart hospital for the third time in the space of a few weeks, a spokesperson said Saturday. 

The 96-year-old is in the cardiac care unit of the National Heart Institute in Kuala Lumpur, a spokesperson who asked not to be named said, without giving further details.

Media descended on the hospital as news spread that Mahathir had been admitted again, and current Prime Minister Ismail Sabri Yaakob also paid him a visit. 

Ismail Sabri tweeted he also met the ex-leader's wife and that he hopes "Mahathir's family continues to stay strong".

Mahathir was admitted about a fortnight after he had a procedure at the same facility, and he also spent several days there in December for a check-up.

He has had numerous heart problems over the years, suffering several heart attacks and undergoing bypass surgery.

Mahathir is one of Malaysia's most dominant political figures, having served twice as prime minister for a total of 24 years.

He was leader from 1981 to 2003, then returned to power in 2018 at the age of 92, heading a reformist coalition in the wake of the huge 1MDB corruption scandal. 

But that administration collapsed in 2020 due to infighting.