A border patrol spokesman says it 's probable they are immigrants . The bodies have not been identified , the Maricopa County Sheriff 's Office says . Activists say border deaths are on the rise as security forces more dangerous crossings . Comment:
A border patrol spokesman says it 's probable they are immigrants . The bodies have not been identified , the Maricopa County Sheriff 's Office says . Activists say border deaths are on the rise as security forces more dangerous crossings . Border patrol officials have argued that more security is necessary to stop smugglers .