Violence and unrest continues unabated in Yemen, despite an agreement by President Ali Abdullah Saleh to step down after more than three decades in power.

At least two anti-Saleh protesters were killed in separate incidents – one in the town of Ibb, the other in the southern province of al-Baida -- involving state security forces in Yemen, according to reports.

Almost three dozen people were wounded in the clash in Ibb after officers in plainclothes reportedly fired on demonstrators.

There were also reports of violent clashes in the southern town of Taiz.

A witness told Reuters: There were thousands in a march who came from outside Taiz, but the police and army and gunmen in civilian clothes confronted them, opening fire with bullets and tear gas. They opened fire heavily from every direction.

Protesters apparently seem skeptical about Saleh’s promises to transfer power and step down soon.

On Saturday, Yemen’s ruling General People's Congress agreed to the terms of a proposal by the six-nation Gulf Cooperation Council (GCC) under which Saleh will hand over power to his deputy within 30 days in exchange for immunity from prosecution.

While opposition groups have generally agreed to the GCC plan, they have some reservations about it. Many Yemeni protesters are incensed that Saleh may escape prosecution.

Opposition leaders have also said they would not join any proposed unity government as long as Saleh is still in office.

In addition, more soldiers have apparently defected to the opposition, further weakening Saleh’s position.