A week after three people were arrested in what authorities described as a botched drug deal that led to a car crash and a shooting, police Wednesday announced the arrest of a fourth person in connection with the case.

Christopher Golsby, 30, of Brooklyn, was arrested Tuesday and charged with first-degree robbery in connection with the botched deal, which took place April 23 in Central Islip. Golsby pleaded not guilty at arraignment Wednesday in First District Court in Central Islip. He was held without bail in the county jail.

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Suffolk County police said Golsby and three others -- the previously arrested Guillermo Quinones, 24, of Hazelton, Pennsylvania, Rene Barahona, 25, of Arverne, Queens, and, June Colon, 17, of Central Islip -- were among "two groups of individuals" who met at Prospect Street and Ridge Avenue at about 12:30 p.m. April 23 for "a prearranged drug sale." Police said that the individuals who were attempting to buy the drugs displayed a weapon and stole marijuana from the drug sellers.

The robbers then fled in an Acura MDX, police said, but were chased by the alleged dealers, who were in a Volvo S60. The robbers then crashed at the intersection of Suffolk Avenue and Allyn Drive, detectives said.

One occupant in the Acura then "fired shots" at the occupants of the Volvo, according to police.

The four suspects were occupants in the Acura, police said.

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Quinones, Barahona and Colon were arraigned April 25.Quinones was ordered held without bail and is due back in court May 5. Colon's bail was set at $100,000 cash and $300,000 bond; he is due back in court May 5. Bail for Barahona, who was arraigned in the hospital and is due back in court May 5, was set at $900,000 bond or $450,000 cash.