GOODYEAR — After announcing an internal investigation into two top Goodyear cops, ABC15 has learned at least one is set to be terminated.

A law enforcement source tells ABC15 the City of Goodyear sent Goodyear Police Chief Jerry Geier a pre-termination letter Wednesday, stating their intent to end his employment before the end of the year.

Geier was placed on administrative leave in October after allegations of impropriety surfaced; However, the City of Goodyear has provided little information on the investigation.

RELATED: Goodyear police chief, deputy chief placed on administrative leave due to allegations of impropriety, officials say

Geier has served as Chief of the Goodyear Police Department since 2012.

Sources say Geier has until December 20 to respond to the city's letter.

In a statement released October 7, city officials said two other department employees, Officer Kyle Cluff and Susan Petty, who works in the administrative division, were also placed on leave due to allegations of wrongdoing.

RELATED: Goodyear officer under investigation had history of errors

Deputy Chief Justin Hughes was also placed on leave, for similar allegations made of Geier.

"Placing these employees on leave is important in order to provide the neutral environment and support needed while outside counsel reviews the situation," Communications Director Tammy Vo said.

The City of Goodyear told ABC15 the following regarding Chief Geier's employment:

"The city’s review of the situation is still ongoing. No final decisions on the Chief’s employment status have been made."