Chief of police Ney A. Bautista said Ortiz's attempted killers took a payment of 400,000 Dominican pesos, or around $7,800.
"On behalf of me and my family, I want to thank John and Linda Henry, Tom Werner, Sam Kennedy and the Boston Red Sox for all that they are doing for David and our family, as well as Dr. Larry Ronan and the wonderful staff at Massachusetts General Hospital".
"His condition is guarded and he will remain in the ICU for the coming days", the 43-year-old's wife, Tiffany, said.
Prosecutors said surveillance video shows two men talking with other people in a gray Hyundai Accent near the bar before the shooting, but authorities in the Dominican Republic have not confirmed that the men are Garcia and Martinez Perez, reported NBC News.
Witnesses said the attack was carried out by two men on a motorcycle and two other groups of people in cars, the Dominican Republic's chief prosecutor Jean Alain Rodríguez told reporters.
Dominican officials identified the suspected gunman as Rolfy Ferreyra Cruz, 25, and said he has been detained, along with four suspected accomplices.More news: Knicks still ready to make push for Kevin Durant signing
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Meanwhile, in Boston, Ortiz's wife said in statement that the former Red Sox star was able to sit up and take some steps as he recuperates in the intensive care unit at Massachusetts General Hospital. A sixth suspect, identified as Luis Alfredo Rivas Clases, remained at large Wednesday.
Tiffany Ortiz asked for privacy "while David continues to heal". He said the alleged coordinator is also among those in custody.
Féliz Garcia's lawyer says his client is an innocent motorcycle taxi driver who had no idea his passenger was going to commit a crime.
Police had been looking for a man who they believed had shot Ortiz Sunday night, though it wasn't immediately clear if the person apprehended Tuesday night is the suspected gunman.
According to court documents obtained by the AP, Feliz Garcia botched the getaway by losing control of his motorcycle.
Ortiz was shot Sunday and is now recovering from exploratory surgery in Boston, where he was flown Monday night.