A woman has been arrested over the deadly blaze that killed eight people at an apartment building in Paris today.<br />''Speaking at the scene, Paris prosecutor Remy Heitz said that a woman who lived in the building in rue Erlanger in the wealthy 16th district had been detained by police.<br />''<br />''<span style="color: #222222;">He further added that police are treating the fire as a possible arson attack .</span><br />