NEW : Witnesses tell Juarez they saw gunmen carry Ciudad Juarez , travel in a AK-47s . Man shot , killed in front of students at school in AK-47s ; one others injured . Police : Suspects `` fired into the crowd without caring about the people there '' Drug traffickers in Mexico have a reputation for prefering AK-47s . No students were injured in the attack ; suspects still on the loose .
NEW : Witnesses tell Juarez they saw gunmen carry Ciudad Juarez , travel in a AK-47s . Man shot , killed in front of students at school in AK-47s ; one others injured . Police : Suspects `` fired into the crowd without caring about the people there '' No students were injured in the attack ; suspects still on the loose .