“Ten people, including a Boulder police officer, were killed in mass shooting at a supermarket in Boulder, Colorado, authorities said Monday.

“A suspect is in custody, Boulder Police Chief Maris Herold said.

“The chief said Officer Eric Talley, who was 51 and had been with the department since 2010, was killed. He was one of the first officers at the scene, she said.

“Herold said that about 2:30 p.m. MT (4:30 ET) police received calls about shots fired and a person with a “patrol rifle.” One senior law enforcement source told CNN the weapon used in the shooting was an AR-15-style rifle.”

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