New Orleans police believe that DeShawn Butler, the 25-year-old man killed with his infant child in a drive-by shooting Wednesday night, was a member of a gang called the Fischer Fools, at war with another group called the Hot Block, NOPD Superintendent Ronal Serpas said Thursday.

Both groups are based in Algiers and are among the 40 street gangs recently targeted by police.

Serpas said he intends to hunt down every member of either gang and haul them in for questioning.

The NOPD announced that the Crimestoppers reward for information has been raised to $15,000, after the FBI and ATF both contributed $5,000 each.

The gunmen opened fire on the car on Gen. DeGaulle Drive, underneath the elevated Westbank Expressway. Butler was shot four times, in the head, neck and twice in the back. His 7-month-old baby, DeShawn Kinard, was shot once to the head. The car, driven by an unidentified woman, came to a stop by the Crescent City Connection toll plaza.

Police believe the gunmen were riding in a dark-colored SUV. A tipster today told police it might have had a silver bumper. There were at least two people in that SUV, but possibly more.

Serpas said he did not know how many people fired, though the NOPD expects ballistics tests will confirm the number of shooters.

Anyone with information about the crime is asked to call Crimestoppers at 504.821.1111 or 1.877.903.7867.