GLENARDEN, Md. (AP) — One person is dead and two others are injured following a shooting late Thursday outside a restaurant at a mall in Maryland, police said.

The shooting happened outside the Silver Diner at the Woodmore Towne Centre shopping mall in Glenarden, police chief Philip O’Donnell told reporters.

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“I believe two people were shooting at each other,” O’Donnell said. He also said the shooting did not appear to be random.

It wasn’t clear whether the shooting had any ties to the restaurant. The diner said on social media that it was “shocked” and “dismayed” by the shooting.

“Thankfully our Associates and Guests are safe. To our knowledge the events occurred outside the diner,” the Silver Diner tweeted Thursday. The tweet has since been deleted.

Friday morning, the diner tweeted: “We are saddened by the incident that happened at the Woodmore Town Center last night. It’s an active police investigation. For details contact the Prince Georges Glenarden police.”

The police chief said he did not have information on the suspects, and the investigation would be taken over by the county.

Glenarden is in Prince George’s County, and that police department said on Twitter that it was helping the city in the investigation.

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Glenarden is a city located about 10 miles (16 kilometers) east of Washington, D.C.