Good morning, Chicago.

Five people were arrested overnight in connection with the fatal shooting of an off-duty Chicago police officer early Saturday on the South Side, according to police sources with knowledge of the investigation.

Five “persons of interest,” including two females, were brought into custody after an hourslong standoff with police in the Auburn Gresham neighborhood, one source familiar with the situation said.

No one had been charged as of Monday evening. Investigators believe the group was involved in the fatal shooting of 24-year-old police Officer Aréanah Preston, sources said, who was shot and killed outside her home early Saturday after finishing her shift in the Police Department’s Calumet District on the Far South Side.

Representatives for the Chicago Police Department would not comment on the arrests Monday morning. A department spokesperson, however, said the CPD had classified Preston’s as a line-of-duty death, which entitles her family to financial assistance from the state.

A responding officer found Preston lying outside and she was taken to the University of Chicago Medical Center, where she was pronounced dead, authorities have said.

Preston, who lived in Avalon Park, worked for the CPD for only three years before her death, according to department officials.

Read the full story by the Tribune’s Sam Charles.

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