Colorado Public Radio: The Regional Transportation District’s chief of police Joel Fitzgerald Sr., who has been on leave since July, is “no longer” with the transit agency, according to an internal memo.

“I want to thank Dr. Fitzgerald for his service to the agency over the last two years and wish him well in his future endeavors,” RTD General Manager and CEO Debra Johnson wrote in a memo emailed to all agency staff on Friday. 

It’s unclear whether Fitzgerald resigned or was fired. Johnson has also refused to explain why Fitzgerald was on leave. 

Visit Colorado Public Radio for more.