The post also said the team’s General Manager, Steve Keim, was stepping down for health reasons.
On Sunday, the Cardinals lost their season finale, 38-13, to the San Francisco 49ers, for a 4-13 season.
Kingsbury was set to begin the final year of his four-year contract. 10 months ago, Arizona signed him to a contract extension through the 2027 season, according to ESPN.
ESPN also said “…Kingsbury’s tenure with the Cardinals was marred by late-season drop-offs, underachieving and four years of undisciplined football.”
Kingsbury’s contract terms were not yet disclosed, but the decision to fire him amid his extension will raise heavy scrutiny.
Read the full statement from the Arizona Cardinals below:
“We have announced that head coach Kliff Kingsbury has been relieved of his duties. In addition, General Manager Steve Keim has decided to step away from his position in order to focus on his health. The team wishes them well and thanks both of them for their contributions.”
This story is developing.