Prime Minister Najib Abdul Razak said he has been informed on  the ill health of jailed PKR de facto leader Anwar Ibrahim condition and has ordered the relevant parties to provide necessary medical treatment.

"I take note of Anwar's heath and I want the relevant parties to make sure he receives necessary treatment," he said via Twitter this evening.

The premier, however, remained mum on the suggestion by Anwar's lawyer's that he be placed under house arrest in view of his deteoriating condition and to allow regular medical treatment.

In a press release earlier today, Anwar's lawyers Sivarasa Rasiah and Jared Genser said their client's  health was deteriorating rapidly because he was being denied the appropriate medical treatment.

They urged the authorities to remove Anwar ( photo ) from jail and place him under house arrest to enable him the needed medical treatment.

They pointed out Anwar had been sent to the Kuala Lumpur general hospital on June 2 where he was warded for two days.

Among other treatment, the lawyers said Anwar required a gluten-free diet and intensive physiotherapy, facilities which were not available at the  Sungai Buloh prison.

Anwar was jailed after he was found guilty of sodomy and sentenced to five years in prison in February.