Five were killed when their pick-up truck hit a tree during their efforts to flee from a car chasing and shooting at them early Friday, police said.
A teenager, who was in the chasing Honda car, turned himself to police later in the day but denied that he drove the car and took part in the shooting.
Police said Somchai Sonthipong, 20, Worawut Wichupanyapong, 23, Arom Saelao, 23, Chawal Thongpradit, 18 and Natee Iamsa, 19, were killed after their truck hit the tree at the Mahaisawan Intersection at 4 am.
A survivor told police that a tire of the truck was shot at, causing the vehicle to lost control. The impact of the crash sent the five victims and another man flown out of the back of the truck. The other one was severely injured.
Later on at 10 am, Ekkarin Nilbai, 19, turned himself at the Ratburna police station, saying he was among the passengers of the chasing car but he did not shoot at the truck.
Ekkrain said the car belonged to his father but he claimed he did not drive it.
Ekkarin said the chasing and shooting occurred after the two groups quarreled in a bar.