Fiji police are reported to have stepped up security around the prime minister, the minister for home affairs, the attorney general and senior officials after threatening calls were made to their homes.
Radio Legend reports that the assistant commissioner of police operations, Sada Nand, has confirmed threatening phone calls were made last night.
Mr Nand says the recipients of the calls do not know where they originated from.
He says police will interview the prime minister, the home affairs minister, the attorney general and the chief executives of the prime minister's office and the home affairs ministry this morning.
Mr Qarase has confirmed receiving threatening calls but says he will leave it to the police.
The Prime Minister is being guarded by armed officers of the Police Personal Protection Unit