The second suspect has been arrested in connection with a drug deal gone bad and shooting at the Union city park Jan. 9.
Spencer L. Grimes, 18, Union, is charged in a felony warrant with first-degree robbery, second-degree assault and unlawful use of a weapon in the incident.
The other suspect, Dakota L. Hopper, 21, Lonedell, was arrested last week and also faces robbery, second-degree assault and unlawful use of a weapon charges.
Both suspects are in custody at the Franklin County Jail. Prosecutors requested a $75,000 bond.
Authorities allege that Hopper and Grimes were involved in the shooting of an occupied truck at the Rotary Pavilion at the park.
Union police said four men were in a truck at the city park at 12:48 a.m. and were attempting to purchase marijuana from the suspects in a car.
Three of the men were from Owensville and the fourth was from Gerald, police said.
The suspects may have thought that the victims were trying to steal the bag of marijuana and one of the suspects discharged a pistol into the air and then at the truck, police said.
The second shot possibly flattened one of the truck tires, according to Union police. The truck then left the park area and was pursued by the suspects.
The driver of the car rammed the truck on Highway 50 at Pecan Tree Lane west of Highway UU, forcing the truck into a guardrail.
The two suspects confronted the four other men after the crash, and one suspect allegedly punched a victim, Union police said.
One of the victims called 911 to report the incident.
The suspects allegedly demanded cellphones and cash from the victims, police said. They fled as police responded to the scene.
Hopper was arrested Jan. 9 by Washington police. The pistol used in the alleged shooting also was recovered, authorities said.
Hopper has eight criminal charges since 2009. His address also has been listed off Highway AJ, Washington.
Grimes was charged in Dec. 2012 with a misdemeanor for possession of marijuana, according to court records.