Mexican authorities have discovered another mass grave in the state of Guerrero.<br/> <br />Investigators found the grave site while scouring the area for nearly four dozen students who disappeared last month.<br/> <br />Their loved ones fear the worst -- as days pass with still no answers about their children's whereabouts.<br/> <br />Federal authorities have arrested more than 50 people in connection with the students' disappearance, including dozens of police and gang members.<br/> <br />Details about this mass grave site are still emerging.
