NEW : An opposition group reports 40 people killed across Syria on Saturday . Russia 's foreign minister says there is no alternative to the evacuation plan . The opposition says doctors are being prevented from treating the injured . UN monitors find signs of an explosion in a village where a massacre was alleged .
NEW : An opposition group reports 96 people killed across Syria on Saturday . Russia 's foreign minister says there is no alternative to the peace plan . The opposition says doctors are being prevented from treating the injured . U.N. monitors find signs of an attack in a village where a massacre was alleged .