UPDATED: One of the women injured in the explosion has died.
An explosion at Sabiha Gokcen Airport in Istanbul, Turkey on Wednesday left two women of the cleaning staff wounded.
Private-run airline company Pegasus Airlines said an explosion, of which the cause has yet to be determined, occurred in the airport apron.
"Of the airport cleaning staff, Canan Celik Burgucu, 33, suffered an injury to her hand and Zehra Yamac, 30, to her head," said the company in a written statement. Yamac was said to be in critical condition.
The company noted there were no passengers inside the jet bridge or the plane at the time of the incident and that the airport would continue its ordinary operation.
The wounded were taken to Pendik Research and Training Hospital.
Istanbul Governor Vasip Sahin said the explosion occurred at 02.05 a.m. (0005GMT) and that an investigation was launched into the cause of the blast.
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