Baton Rouge police issued a warrant for the arrest of a 19-year-old man suspected in a January fatal shooting at a BREC park.

Cassey Desmoin Feast — jailed in a separate shooting — is accused in the slaying of Dexter Lee, 19, in the park in the 1300 block of Spanishtown Road, according to the warrant.

Lee, of 5232 Wilmot St., was found slumped in the driver’s seat of a car with multiple gunshot wounds Jan. 25 at about 6 a.m.

He was pronounced dead at the scene.

During the course of the investigation, detectives learned of a possible witness and interviewed him Oct. 24, the warrant says.

The witness, who is not identified in the warrant, said he was with Feast prior to the shooting and saw him get into a car with Lee, the warrant says.

The witness said he saw Feast and Lee drive off toward the park and then heard gunfire erupt minutes later, the warrant says.

Feast then returned and told the witness that he had shot Lee, the warrant says.

The witness led detectives to the gun used in the killing — which had been hidden in the witness’ couch and later sold — and the State Police crime lab identified it as the murder weapon, the warrant says.

Feast, 11954 Forest Oak Drive, will be booked Monday on one count of second-degree murder, said Cpl. L’Jean McKneely, a police spokesman.

Feast is in Parish Prison on one count of principal to attempted first-degree murder in the Oct. 21 drive-by shooting of three teens on Elm Street.

The victims — a boy and a girl, both ages 15, and a 14-year-old girl — were standing in front of a house at 3212 Elm St., about 12:30 a.m. when Feast and another man drove by and opened fire, police have said.

The 15-year-old girl was critically injured while the other two victims suffered nonlife-threatening injuries.

Reginald S. Taylor, 17, who told police he lived at the same Forest Oak Drive address as Feast, was booked into Parish Prison on one count of attempted first-degree murder.

The shooting stemmed from a previous altercation, police have said.

Investigators think Feast and Taylor were targeting people, though not necessarily the victims, at the Elm Drive home, police have said.

Feast and Taylor shot at the youths because they believed their intended targets were in the group, police have said.