Buddhists gather outside a police station in the town of Lashio in northern Myanmar on Tuesday.<br/> <br />They're demanding police turn over a man, said to be a Muslim, who is accused of attacking a Buddhist woman.<br/> <br />The trouble sparked after a quarrel between the man and the woman, who sold petrol.<br/> <br />Several residents said the man doused the woman in fuel and set her afire.<br/> <br />She is now in hospital.<br/> <br />A mosque, a Muslim religious school and a dozen shops owned by both Muslims and Buddhists were firebombed in ensuing clashes into Tuesday evening.<br/> <br />No one was reported killed.<br/> <br />Relative calm returned to the streets of Lashio on Wednesday.<br/> <br />But the renewed unrest underlines problems faced by the reform government of President Thein Sein as it struggles to contain sectarian tensions that festered under half a century of military rule.