REX, Ga. –  Police in Georgia are investigating after a monument dedicated to one of first lady Michelle Obama's relatives was knocked over in suburban Atlanta.

Clayton County Commissioner Sonna Singleton tells WSB-TV that a stone monument to Michelle Obama's great-great-great-grandmother, Melvinia Shields, was pushed over and will need to be inspected for cracks. The report was aired Monday.

Officials say Shields was born into slavery in the mid-1800s and later settled in Rex, Ga., -- about 15 miles southeast of downtown Atlanta....