Opposition supporters battled security forces in Togo's capital on Monday and the country's two main political rivals agreed on a government of national unity to avert fresh violence over a disputed presidential poll. Ruling party candidate Faure Gnassingbe and main opposition leader Gilchrist Olympio agreed at talks in Nigeria all sides would have a stake in a new government, whoever won Sunday's vote to choose Togo's first new leader in nearly four decades. Polling day clashes killed at least one person and on Monday Togo's tense capital Lome rang with sporadic bursts of gunfire and the pop of tear gas canisters. "If they declare Faure (Gnassingbe) the winner, this place is going to go up in flames. This is only the beginning," said Sassou Achou, a 28-year-old opposition supporter, before the presidential poll result expected possibly on Tuesday. In Lome's Adakpame suburb, small groups of youths with sticks, rocks and machetes burned tires and security forces fired tear gas and stun grenades as they tried to advance to douse the flames.