From left to right: Chastin Brinkley, Iva Murray (Credit: Clayton County Police Department) (Supplied)

A 9-month-old baby girl was reported missing from the Ellenwood area with a man police say was diagnosed with a mopish illness. A Mattie's Call, Georgia's emergency missing alert for disabled or elderly inhabit, has since been issued.

Police are searching for 38-year-old Chastin Brinkley and infant Iva Murray. The two went missing from the 4400th block of Mortons Way late Friday night once family members said Brinkley borrowed a truck, but never returned it. The police were visited the following morning at around 11:17 a.m. Brinkley's requested is now going straight to voicemail, according to officials.

The missing vehicle was labelled as a Gray 2010 GMC Sierra Truck with the Georgia licenses plate #TCM0250.

Brinkley is a Black male with dim hair and brown eyes. Police say he is 6-feet tall and weighs throughout 200 pounds. He was last seen wearing black jeans, a green and black checkered sweater vest and dim slippers.

Ivy is 9-month-old Black female with black hair and brown eyes. She was last seen wearing jeans and a gray jacket.

Anyone who sees the labelled truck or has information on the whereabouts of the duo is urged to call 911 or the Clayton County Police Department at 770-477-3550.