Earlier in what would be her final shift, Chicago police Officer Krystal Rivera took two guns off the street, authorities said, only to come face-to-face with a rifle later that night.

Rivera, 36, a four-year veteran with a young daughter who lived in the Irving Park neighborhood on the Northwest Side, was killed after the Gresham (6th) District tactical team she was part of tried to conduct an investigatory stop on a person believed to have a weapon about 9:50 p.m. Thursday in the 8200 block of South Drexel Avenue.

The first Chicago police officer to be killed in the line of duty this year, Rivera was mourned by city officials and her fellow officers, who praised her work ethic and asked Chicagoans to keep her family in their prayers.

“Our officer was young, vibrant and a hard worker,”

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