Activists say Yemeni security forces have fired on a rally in the capital Sanaa, wounding five.
Protesters have been holding almost daily rallies since February against President Ali Abdullah Saleh, demanding his resignation. Saleh has been in Saudi Arabia for two months for treatment of serious wounds suffered in an attack on his compound, but he refuses to quit.
Activists say security forces opened fire at the rally as it passed the Foreign Ministry, leaving five protesters wounded. They said security forces sealed the city to try to prevent a large turnout.
The activists were speaking on condition of anonymity because they feared reprisals.
Al-Qaida-linked militants have taken advantage of the turmoil to take control of parts of Yemen's south.