NEW : The Yemen Solidarity Council says security forces are blocking access to hospital . Medical officials say four people died and four were injured after clashes in Tunisia . They were countered by a pro-government demonstration on Tahrir Square , where thousands waved flags and held up pictures of Saleh , who has ruled Yemen since 1978 . Saleh tribal leaders say they will join protests calling for the Yemini 's resignation . Witnesses say the victims are anti-government demonstrators .
NEW : The Yemen Solidarity Council says security forces are blocking access to hospital . Medical officials say four people died and four were injured after clashes in Tunisia . Saleh tribal leaders say they will join protests calling for the Yemini 's resignation . Witnesses say the victims are anti-government demonstrators .