(CNN) The head of Malaysia's civil aviation authority resigned Tuesday after a report on missing Malaysia Airlines flight 370 showed failures by Kuala Lumpur's air traffic control center.

Malaysian authorities said Monday they had failed to determine the cause of the 2014 disappearance of the aircraft, but highlighted lapses by air traffic control in complying with operating procedures -- without suggesting they were to blame for its loss.

Azharuddin Abdul Rahman, the chairman of the Civil Aviation Authority of Malaysia (CAAM), said in a statement that while the report did not fault the Department of Civil Aviation, there was evidence Kuala Lumpur Air Traffic Control Center "did not comply with certain Standard Operating Procedures".

"Over the past four years, I have tried my level best to assist in the search for MH370 and I am ever resolute in finding answers we all seek towards this unfortunate tragedy as we owe it to the families and loved ones," he said. "I am saddened to have to leave under these circumstances."

His resignation will take effect in 14 days.

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