Riot police attacked protesters and arrested many of them as thousands gathered in Tahrir Square in Yemen's Taiz province on Sunday demanding the removal of the Saleh regime.

Eyewitnesses said police raided the demonstration at down in downtown Taiz and beat some of them with batons.

Police blanked the square after thousands took the streets following the resignation of President Mubarak, urging Saleh to quit. Demonstrations continued for a third day on Sunday.

Few thousands were said to have decided to protest in the square through Saturday night chanting slogans: "Go go president, Yemen has become miserable," and other slogans including those blessing the Egyptian revolt.

In Sana'a, between 1500-2000 people, mostly college students, marched on the presidential palace today but when they arrived at Sabeen Square the Central Security Forces blocked their protest.

Barbed wires were placed before the protesters and police in civil uniform attacked and arrested protesters including journalists, eyewitnesses said.

Police used sticks and stun batons to attack protesters who were chanting: "Go Ali, follow Mubarak', ' the people want the removal of the regime'. Some were injured including activists.

The demonstration started at Sana'a University which has been hosting most of the pro-Tunisian revolution rallies.

Tawakul Karman, a human rights activist, who inspired the post-Tunisian uprising protests in Yemen and was arrested in connection with this, released and later threatened along with activists including lawyer Kahliad Al-Anesi inspired the march.

On Saturday, thousands, mostly college students, marched to Tahrir Square but regime supporters who have been stationed there clashed with them and prevented them from walking into the square.

The ruling party supporters are occupying Tahrir Square in what appears to an attempt to prevent the people and opposition rallies from going there to protest and liberate themselves after the victorious Egyptian people.

The regime is currently tightening security and taking several measures amid fears the fever of protest spreads to the country in the aftermath of the Tunisian and Egyptian revolutions.