[Ads /]
Chicago police said the shooting occurred about 9:10 p.m. in the 6300-block of South Bell Avenue, and it left the officers in serious-to-critical condition.
They were taken to University of Chicago Medical Center, where a crowd of officers gathered after 10 p.m. Some officers could be seen hugging each other; others appeared emotional.
A female officer succumbed to her injuries, police said.
A male officer was still fighting for his life early Sunday morning.
Police said during a press conference early Sunday that the officers conducted a traffic stop on South Bell, during which shots were fired.
WATCH: Mayor Lightfoot, CPD give update after 2 officers shot
Mayor Lightfoot, CPD give update after 2 officers shot
Two suspects were taken into custody, police said. One suspect had been shot and was taken to a hospital.
An active scene was visible at South Bell Avenue and West 63rd Street in West Englewood.
About a block from the shooting, neighbors looked out cautiously from their front yards, which one referred to as a "quiet block."
[Ads /]
RELATED: Chicago shootings: 'No Crime Day' promotes peace in Burnside, other communities
"Be careful, they're still looking for someone," a woman warned a neighbor as she walked by.
Dozens of officers could be seen patrolling the neighborhood and blocking streets in the area while a police helicopter flew overhead.
WATCH: Heavy police presence in West Englewood after CPD shooting
Heavy police presence in West Englewood after CPD shooting
[Ads /]
Cook County sheriff's deputies and K9 units were also on the scene.
In a statement, CPD Superintendent David Brown said, "The Chicago Police Department has lost one of our own in an incomprehensible act of violence. A 29-year-old female officer assigned to the Community Safety Team was shot and killed in the line of duty Saturday night. A second officer was also shot and is in critical condition.
"These officers put the safety and lives of others above their own, serving with courage and honor despite knowing the cost.
"Please pray for the family and loved ones of the fallen officer who will now face a world without her. Please also pray for the recovery of the officer who is fighting for his life.
"I ask you to please hold their fellow officers in your thoughts as they process this heartbreaking tragedy.
"We will never forget the sacrifices these officers made to protect this city. We cannot forget."
Sun-Times Media contributed to this report.