A Cobb County childcare center is under investigation after allegedly leaving an infant asleep in a crib when the staff left. The child's mother told police she arrived at River Oaks Day Care on Floyd Road in Mableton about 10 minutes before the center closed at 6 p.m. Tuesday, Officer Mike Bowman with Cobb County police told the AJC. The mother, Lakristy Rogers, had passed the center's owner driving away, but assumed other staff members were still inside, Bowman said.