Former U.S. President Jimmy Carter walks on the floor before the first session of day two of the Democratic National Convention (DNC) at the Pepsi Center in Denver, Colorado.
The couple likes to ride bicycles in nearby Freedom Park when they have free time. Peter Wicker, the owner of a local bike shop, donated the bicycles to the Carters in 2007 after seeing the poor condition of their old bikes, which had been brought in for repairs.
Atlanta police say they have made no arrests.
A spokeswoman for the Carters told The Atlanta Journal-Constitution that the couple is currently in China.