Thirty-two-year-old Celena Hollis was shot Sunday night while responding to a disturbance. 

Hollis was a single mother and a seven-year Denver police veteran. She previously worked as a police officer in Detroit. 

Hollis' funeral will be at the Denver First Church of the Nazarene and burial will be at Fairmount Cemetery. 

A public viewing is scheduled for Friday at Horan and McConaty mortuary. Police have arrested 21-year-old Rollin Oliver on suspicion of first-degree murder in Hollis' death.

A musical tribute for Hollis will be held at City Park Jazz on Sunday. 

Officials are encouraging people to show their support by wearing purple - Officer Hollis' favorite color. 

They can also join a silent vigil held on the west side of Ferril Lake at 5 p.m. 

A table will be set up were people can donate to a college fund for Hollis' daughter. 

(Copyright 2012 by The Associated Press. All Rights Reserved.)