SANAA: Tens of thousands of people called for the Yemeni president's ouster in protests across the country on Thursday inspired by the popular revolt in Tunisia.

The demonstrations led by opposition members and youth activists are a significant expansion of the unrest sparked by the Tunisian uprising, which also inspired Egypt's largest protests in years.

They pose a new threat to the stability of the Arab world's most impoverished nation, which has become the focus of increased Western concern about a resurgent al-Qaida branch, a northern rebellion and a secessionist movement in the south.

The largest demonstrations took place in the capital of Sanaa, where crowds in four parts of the city shut down streets and chanted slogans calling for an end to the government of President Ali Abdullah Saleh, who has been in power for nearly 32 years.

''We will not accept anything less than the president leaving,'' said independent parliamentarian Ahmed Hashid.Similar anti-government protests took place in the southern provinces of Dali and Shabwa where riot police used batons to disperse the demonstrators.

In al-Hudaydah province, an al-Qaida stronghold along the Red Sea coast, thousands took to the streets demanding the end of Saleh's rule.

Opposition leaders called for more demonstrations on Friday.