WASHINGTON, DC -- Five people were arrested after Washington, D.C., police say the suspects opened fire on officers, reports CBS DC.

No one was injured in the incident, police say.

Police spokesman Dustin Sternbeck said the officers were responding to reports of gunfire in Southeast Washington. When they arrived in their marked police cruisers, people inside an SUV began shooting at them.

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Sternbeck says police returned fire at the suspects, who barricaded themselves in the vehicle.

Police ordered the people to come out, but at first they refused. After about 30 minutes, three women and two men in the SUV surrendered.

Sternbeck says it's not clear why they fired on officers. The investigation will also look into whether they were involved in any other crimes before police arrived.

The latest incident follows protests over police killings of black men in Louisiana and Minnesota and the fatal shooting of five police officers in Dallas last week.