Reward increased to $15K to find missing CDC researcher

The reward to find a missing Centers for Disease Control and Prevention researcher has increased to $15,000, Atlanta police said Tuesday.

Timothy Cunningham, an epidemiologist, worked for the chronic disease department of the CDC. He was last seen the morning of Feb. 12, when he left work and told co-workers he was feeling ill.

Two days later, Cunningham's keys, wallet, cell phone, vehicle and his beloved dog, Bo, where all found in his northwest Atlanta home, but there were no signs of him. The investigation into his disappearance continued Tuesday. Atlanta police have said there are no signs of foul play, though nothing can be ruled out.