SANAA (Reuters) - Yemen's embattled President Ali Abdullah Saleh told a group of supporters he would remain steadfast and would not accept "conspiracies or coups." "Those who want power or to gain the seat of power should do it by heading to the ballot box. Change and departure will be through voting under the legal framework of the constitution," Saleh, who has ruled the impoverished Arabian Peninsula state for 32 years, was quoted as saying by Yemen's official state news agency. Saleh vowed not to seek reelection when his current term expires in 2013, but has faced an unprecedented wave of protesters calling for his immediate resignation. Meanwhile, Gulf Arab states trying to mediate a transition of power in Yemen will send the UAE foreign minister to Sanaa within days, a Yemeni official said, but President Ali Abdullah Saleh again refused to quit quickly. Bloodshed continued with at least four more deaths of anti-government protesters reported. Saleh voiced accused opponents of instigating "conspiracies or coups" and said he would not accept either, his latest iteration of defiance in the face of massive public protests. Yemen's Western and Gulf Arab allies have sought in vain so far to negotiate an orderly transition of power from Saleh, but opposition patience has been fading with more violence flaring. "Abdullah bin Zayed is coming to Sanaa in the coming days to convey the Gulf view after listening to the points of view of the government and the opposition," a government official told Reuters. Yemen's allies, which long backed Saleh as a bulwark against an active Yemen-based al Qaeda arm, fear escalating clashes would cause chaos that could benefit the global militant group. Saleh, whose term ends in 2013, has warned of civil war and the break-up of the Arabian Peninsula country if he is forced out. Gulf and European foreign ministers meeting in Abu Dhabi said they were deeply concerned over the situation in Yemen and urged the sides to reach a deal through dialogue. "The current impasse between the various parties might decline quickly into more serious confrontation and conflict," the ministers said in a statement. Tension has mounted as protesters irked by the slow pace of progress test the limits of security forces by marching outside traditional protest zones and torching tyres in the streets. "Those who want power or to gain the seat of power should do it by heading to the ballot box," Saleh, who has ruled impoverished Yemen for 32 years.