Chicago police Officer Krystal Rivera was mistakenly shot and killed by a fellow cop during a confrontation with an armed suspect late Thursday, according to police, who continue to hold at least

Krystal Rivera, a 36-year-old single mother who had spent four years on the force, was rushed to the hospital in a squad car after taking a gunshot wound to the back. The vehicle she was traveling in bizarrely crashed and caught on fire, and she had to be transferred into another vehicle to complete the journey.

Police confirmed that the only person who fired a weapon during the chase was an officer, "whose gunfire unintentionally struck Officer Rivera."