2 Atlanta high schools placed on lockdown over separate security concerns

North Atlanta High School and Carver High School were placed on lockdown Wednesday for separate security concerns, Atlanta Public Schools said.North Atlanta High went on full lockdown Wednesday morning after receiving a threat by phone. The district said all students and staff there were safe inside their classrooms and asked parents and caregivers to stay away from campus while police investigate.CBS News Atlanta The district said the lockdown at Carver was related to a security matter in the s