Saudi Arabia’s aviation authority has terminated a concession agreement with Singapore’s Changi Airports International and its local Saudi partner to operate the King Abdulaziz International Airport in Jeddah, it said in a statement on Wednesday.

The General Authority of Civil Aviation (GACA) awarded the contract last April for a period of up to 20 years. It did not elaborate on its reason for cancelling the agreement. Changi and its partner, the Saudi Naval Support Company, confirmed in a separate statement that the consortium had received a notice of termination from GACA. The companies said they had “strictly observed the request for proposal process stipulated by GACA”.

“[The consortium] submitted all required documentation for GACA’s review and had obtained all requisite approvals before the award of the concession”, they said.