The city opened an investigation on Lanyon following “rumors” that city policies had been broken, said City Administrator Eric Taylor.
Taylor would not say what kind of policies were being investigated, but said the investigation started a few weeks ago.
“It wasn’t a forced resignation or anything like that,” Taylor said.
Taylor said the investigation is focused solely on Lanyon.
Smyrna Police Department officials deferred questions about the nature of the investigation to Taylor.
Lanyon turned in his letter of resignation Monday, which said he was leaving the department voluntarily.
“I have enjoyed my time with the city of Smyrna serving beside the men and women of the fire department, and it has been an honor to serve the citizens of Smyrna,” Lanyon wrote.
An open records request submitted by the MDJ found no blemishes on Lanyon’s personnel record.
He’s been employed by the Smyrna Fire Department since June 10, 1996. He became acting fire chief on Feb. 2, 2004, and was promoted to fire chief in July of that year.
Taylor said the city plans to launch a search for a new fire chief, but deputy fire chief Ron Acree has stepped up in the meantime to serve as acting fire chief and acting emergency management agency director, a position Lanyon also held.
Acree has been with the city since October 1990 and was promoted to deputy fire chief in February 2009.
Lanyon did not return phone messages left at a number listed under his name. The number was associated with a Woodstock address.