Baton Rouge police detectives on Thursday were investigating the fatal shooting of a 20-year-old Baton Rouge man.

Jermayne Dovonbantu Jackson, 1844 Gen. Adams Ave., was shot and killed at 10 p.m. Wednesday while sitting in the back of moving vehicle, police said.

The shooting happened in the 4200 block of Provost Street, just south of Gus Young Park. Witnesses told police they heard gunshots strike the vehicle and noticed Jackson and another 20-year-old man sitting next to him had been struck, police Cpl. Tommy Stubbs said in a news release.

The other occupants of the vehicle continued driving to a hospital, Stubbs said, where Jackson died and the other man was treated for non-life-threatening injuries. Detectives have no suspects and had not determined a motive in the shooting, Stubbs said.

Police Cpl. L’Jean McKneely said “We have limited information but are following up on leads.”

Jackson’s mother, Annie Sutton, was distraught after learning of the shooting and said she also knew very little about what had occurred.

“I just know they said he had gotten killed,” she said. “I don’t know any details.”

The shooting came less than two days after prosecutors dismissed a 2012 armed robbery case against Jackson, who had appeared in 19th Judicial District Court on Tuesday.

East Baton Rouge Parish District Attorney Hillar Moore III said the charge was dismissed because prosecutors had no cooperation from the alleged victim of the robbery, who had a criminal record and gave a statement the authorities could not corroborate.

Jackson’s defense attorney in the case, Kerii Landry-Thomas, said she learned of the shooting Thursday morning and was “deeply troubled” by it.

She said Jackson had been working toward his General Educational Development certificate and “was doing well on his bond review.

“His bond monitor indicated how well he had been doing under his supervision and how he wished he had many more clients like him,” Landry-Thomas added. “He was a good kid trying to get on the right track.”

Court records show Jackson had posted a $7,500 bond in March and was released from custody.

Anyone with information on the fatal shooting is urged to contact the Violent Crimes Unit at (225) 389-4869 or Crime Stoppers at (225) 344-7867.

Advocate staff writer Steven Ward contributed to this report.