Dog running down Dartmouth Road

Hi, yesterday at around 4:45pm I came out of Forest Hill pools and saw a Yorkshire Terrier type of dog sprinting in the direction of Forest Hill Station - initially it was running on the pavement and then it went on the road. It almost got hit by a car - It ran so fast I couldn’t keep track and lost sight of him. I could see in the distance other people were trying to catch him and keep him off the road. Did anyone else witness this and know what happened to this dog? I had a group of small children with me so could not run after it. Hope it’s ok and got reunited with its owner as no owner was running after it.