"There were five subjects that have been shot: one was a juvenile, the other four [were] adults. They were taken to an area hospital, where they are being treated at this time," Wright said in a video message, posted on Twitter.
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According to Wright, gunshots in the Sumner Road, Southeast were reported to the police at around 2:30 p.m. on Monday (18:30 GMT).
The police added that they were searching for a gray or silver vehicle that presumably belonged to the suspected shooter, who fled from the scene.
Shooting accidents are not uncommon in the United States, where citizens have a constitutional right to buy and carry firearms.