Signal Hill Police Department Chief Christopher Nunley announced his retirement Tuesday.

A city official said Nunley’s official last day as chief was Sept. 17.

“It has been the greatest honor of my life to serve as your police chief,” Nunley said. “I am proud to have been a member of this department, and for all that it has offered to me and my family.”

Nunley began his career with the SHPD in 1997, and was appointed chief of police in January 2016. During his time as chief, he has overseen the construction and move to a new police facility, the implementation of body worn cameras, the replacement of the department’s dispatch software and the implementation of a homeless liaison officer.

SHPD Capt. Brian Leyn will serve as acting police chief until an interim chief is named, according to a department statement.

The announcement comes nearly a week after Nunley’s Long Beach counterpart Robert Luna also announced his retirement from chief of that city’s department. Nunley’s retirement announcement was also made on the heels of a deadly officer-involved shooting that took place Monday.

Editor’s note: This story was updated to include Nunley’s last day as chief.