The first victim was identified as Prasit Kladkhemphet, 40, from Chanthaburi. He was hit after he parked his pickup truck on the roadside and was crossing the road.
About 500 metres away, the second victim, a 30-year-old Vietnamese identified only as Bird, was killed as a Mitsubishi Pajero fled the scene after the driver lost control and hit the meatball vendor's sidecar, police said.
Klong Luang police said the driver of the SUV is believed to be from Myanmar. The double fatality occurred at 2am in front of the Iyara Market in Tambon Klong Song.
Eyewitness Pradit Emphan, 51, said he saw the SUV swaying left and right before it hit the vendor's sidecar and plunged into a ditch. The driver then left the SUV and fled on foot.
While police were checking the scene, a Thai woman, Waraporn Phapan, 32, showed up at the scene and told police that the SUV belonged to her Myanmar husband, Lek, 37.
Waraporn said she did not know why her husband drove to the area because their house was in Thonburi. She said her husband called her to get the SUV after the fatalities. She said she could could not contact him again.