The team moved up its practice schedule Wednesday so players could attend a 2 p.m. memorial service for Belcher at the Landmark International Deliverance and Worship Center in Kansas City.
The person who spoke to The Associated Press requested anonymity because he or she wasn't authorized to discuss the event.
The person said the memorial service is not open to the public. Other details of the service aren't known.
Belcher shot Kasandra Perkins at their home Saturday morning before driving to Arrowhead Stadium, where he committed suicide in the practice facility's parking lot.
(Copyright 2012 by The Associated Press. All Rights Reserved.)