Atlanta police said they are investigating a possible hit-and-run involving a rollerblader.
The victim was found lying in Ira Street at Fletcher Street in southwest Atlanta, police Capt. Tim Meek said. He said the man was taken to Grady Memorial Hospital in critical condition.
Channel 2 Acton News was there as police gathered evidence. The area was roped off while the police department's crime scene unit was at work just after midnight.
Police are still looking for the driver.