Over 400 demonstrators were wounded on Tuesday in clashes with police in the Yemeni city of Taiz, the Al Jazeera TV channel reported.
There are so far no reports of deaths in the violence, which comes a day after at least 10 people were killed when security forces fired on protestors in the city.
Violence between protestors and supporters of Yemeni President Ali Abdullah Saleh also occurred in the capital, Sana.
The Yemeni Defense Ministry said three people were killed and 15 were injured.
More than 120 people have been killed and 5,000 injured since the protests inspired by popular uprisings in Tunisia and Egypt broke out in early February President Saleh, who has ruled since 1978, announced a state of emergency in Yemen on March 18.
MOSCOW, April 5 (RIA Novosti)