SANAA (AFP) - Opponents and supporters of Ali Abdullah Saleh held rival rallies in the Yemeni capital Friday after pre-dawn fighting between rival security forces dashed hopes an exit deal for the president would end the violence. Youth activists, who have spearheaded 10 months of protests against Salehs 33 year rule in which hundreds have died, are furious that the agreement signed with the parliamentary opposition on Wednesday promises Saleh and his family immunity from prosecution. The blood of the martyrs which has thrown you out of power, Saleh, will throw you in prison, preacher Fuad al-Hanjari told tens of thousands of activists after funerals for four out of five protesters killed by plainclothes gunmen in the capital on Thursday. The squares will remain our homes until we accomplish our goals the exit of all the regimes remnants and building a new Yemen, he said. The activists said similar protests were held in 17 of the 22 Arabian Peninsula countrys provinces, including two of the most populous Taez and Ibb. They say that Salehs agreement to hand all necessary constitutional powers to Vice President Abdrabuh Mansur Hadi with immediate effect and hold office on an honorary basis only for the coming 90 days is not enough and are demanding the departure of the whole regime. We did not start a revolution to keep half of the killers, spokesman Walid al-Ammari said on the eve of Fridays rally, adding that Hadi, the low-profile vice president for the past 17 years, is just another arm of Saleh. Saleh, who was still in Saudi Arabia after Wednesdays signing of the exit plan drafted by his impoverished countrys wealthy Gulf neighbours, condemned Thursdays violence by his loyalists and ordered an investigation. The 69-year-old, who sustained serious blast wounds in a June bombing of his residence and has already received extensive treatment in Saudi Arabia, is to stay in Riyadh for medical tests, Yemeni Foreign Minister Abu Bakr al-Kurbi told the kingdoms Al-Watan daily. No specific date date has been set for his departure, as this depends on the results which will determine if he will be treated in the kingdom or in the United States, Kurbi told the newspaper. If the results are reassuring, he will return to Yemen. UN chief Ban Ki-moon, whose Yemen envoy Jamal Benomar was instrumental in persuading Saleh to sign the Gulf transition plan after months of prevarication, had said he expected the president to travel to New York for treatment. Tens of thousands of Salehs supporters held a massive counter-demonstration on the capitals Sabiin Avenue Friday demanding change only through the ballot box a constant refrain of the president during his long months of refusal to sign up to the exit plan.