Amman, Jordan: Members of Jordan's major Bedouin tribes are warning of a Tunisia or Egypt-style revolt in the country if the US-backed ruler does not speed up political reforms.

It is very rare for Jordan's tribesmen, who form the bedrock of support for the monarch, to criticise the government.

Monday's letter signed by 36 tribesmen nationwide also criticised overspending and interference in executive decisions, a veiled reference to King Abdullah's high profile wife, Queen Rania.

Islamists and other opposition have staged protests demanding greater say in politics and employment opportunities. They have insisted, however, that Abdullah remain in power.

The tribesmen also echoed demands by other protesters that the king no longer just appoint the government and instead give citizens more say in its makeup.