SOUTHFIELD, Mich. -

Southfield police have released a picture of two men they are calling persons of interest in the shooting death of a 33-year-old mother.

Nicole Riggs was killed March 31 when she was hit by gunfire at Myst Ultra Lounge.

33-year-old Nicole Riggs and husband Leon Riggs

--Nicole Riggs

She was at the club with relatives attending a birthday party when a group of men were kicked out of the club for fighting.

While in the parking lot, the men fired several shots.

Police said the persons of interest were involved in that fight and may have information on the shooting. The latest picture is in addition to a previous picture of a person of interest police had also released.

Myst-person-of-interest

--Southfield police: Person of interest

They may be driving a white minivan or white conversion van, police said.

Anyone with information on the man in the picture is asked to call Southfield police at 248-796-5500 or Crime Stoppers at 800-SPEAKUP.

Crime Stoppers is offering a $2,500 reward for information that leads to an arrest.

Victim leaves behind family

Leon Riggs had been married to Nicole for 10 years. He says she was a loving mother.

"I have to explain to my 13-year-old now that his mother is never coming home," he said.

Leon Riggs says his wife was an innocent bystander and she had nothing to do with the fight. He says she was in the wrong place at the wrong time.

Myst Lounge nightclub