Shire of Coorow chief executive Mia Maxfield had her contract ended without notice last week.
Former deputy CEO Sam Curulli is before the courts, charged with nine counts of fraud, corruption, stealing and perjury relating to his time at the shire.
Three West Australian councillors have resigned after the shire chief executive was sacked without warning.
Ms Maxfield said her contract was due to expire next year, but she was told her services were no longer needed and at once had her work laptop taken and building access revoked.
Ms Maxfield said she was handed a document citing "non-performance" as the reason for her dismissal.
The document has not been seen by the ABC due to confidentiality restrictions.
The meeting minutes and recordings remain unpublished, but it is understood councillors voted 4-2 to end her contract.
Newly-appointed shire president Colin Hassell has declined to comment.
Last year Ms Maxfield was nominated in the National Awards for Local Government in the Women in Local Government category by her staff.
Former shire president Guy Sims, deputy shire president Giulia Censi and councillor Luhan Van Den Heever resigned in the wake of Ms Maxfield's sacking, citing a "loss of confidence" in the remaining council.
The meeting was closed to the public and Ms Maxfield left the room as council considered the CEO annual performance review, in line with confidentiality measures for staff work discussions.
A state government spokesperson said Local Government Minister Hannah Beazley was aware of the situation.
Local Government Inspector Tony Brown said complaints made to his office were confidential.