The shooting occurred at the Iglesia Faro De Luz Church at around 8 p.m. local time, according to tweets from Aurora Police.
Two adult men have been taken to a hospital with gunshot injuries, and they are expected to survive, police said. A woman died on the scene.
The suspect fled before officers arrived at the scene, and police said they are working on identifying the shooter.
There is “some sort of a relationship” between the suspect and one of the victims, a police spokesperson said, adding that they are not disclosing additional details at this time.
“It wasn’t just a random shooting inside this church,” he said.
Police were interviewing witnesses Friday night.
CNN has reached out to Iglesia Faro De Luz Church.
Please check back for more details on this developing story.