Several mass graves were found along this track in the Mexican state on Guerrero where dozens of people have been missing since last week.<br/> <br />The graves were found on Saturday on the outskirts of Iguala city.<br/> <br />Relatives of the 44 people missing after clashes between students, police and armed men now face an anxious wait for news.<br/> <br />There've been allegations that police used excessive force against the students.<br/> <br />More than 20 officers have been arrested for killing two students in the violence.<br/> <br />Human rights representatives say the condition of the remains found in the newly-discovered mass graves isn't yet known.<br/> <br />Many mass graves have been unearthed across Mexico in recent years, the legacy of drugs gang violence that's killed about 100, 000 people since 2007.
