NEW : three security officers killed in recent protests Saleh did not appear to be wavering in his intention to remain in office . , official news agency reports . Aden 's main opposition bloc rejects calls for a unity government . President Saleh has called for a coalition government to end protests . Opposition groups are calling for demonstrations against Ali Abdullah Saleh 's rule on Saturday .
NEW : three security officers killed in recent protests , official news agency reports . Aden 's main opposition bloc rejects calls for a unity government . President Saleh has called for a coalition government to end protests . Opposition groups are calling for demonstrations against Ali Abdullah Saleh 's rule on Saturday .