At least nine people were shot, four fatally, when an unknown gunman opened fire at a bar in Kansas City early Sunday morning.

As NBC News reports, Kansas City police said a shooter entered a bar on 10th & Central Avenue and opened fire, killing four people and injuring five more.

The shooter is still at large, though police are treating the deadly gunfire as an isolated incident, according to the report.

Authorities are investigating, and have not released the identities of any of the victims.

This is a developing story. CrimeOnline will provide further updates when more information is available.

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