Police released images of the persons of interests who police say were walking in the area prior to the shooting death of Matheus Gaidos.
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The shooting happened around 6:30 p.m. on June 21 in the 400 block of 26th Street.
Police say it provided medical treatment to the victim until they were relieved by medical personnel. Gaidos was taken to an area hospital for further treatment but pronounced deceased at the hospital.
Police say if anyone knows the individuals or have information about this case to contact the Oakland Police Department Homicide Unit at (510) 238-3821 or the TIP LINE at (510) 238-7950.
RELATED: Video shows moments before man delivering flowers fatally shot in Oakland
VIDEO: Man delivering flowers fatally shot in Oakland
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Video obtained by ABC7 News last week shows the moment a man shoots and kills someone on Telegraph Avenue and 26th street.
It shows two people walking their dogs go right by a person carrying a vase of flowers.
INTERACTIVE: Take a look at the ABC7 Neighborhood Safety Tracker
One of the dog walkers, a man, turns to speak with the person carrying flowers. The two exchange words and a fight breaks out. The man pulls out a gun and shooting Matheus Gaidos, who was seen carrying flowers.
Oakland police and CrimeStoppers of Oakland are offering a reward of up to $10,000 for information leading to an arrest in this case.