Australia’s transport safety regulator says it has opened an investigation into a fourth safety incident involving air traffic control at Sydney Airport within less than a month. The regulator announced the probe on Friday after reports of the latest close call.

The Age reports that Sydney Airport is under investigation following the spate of incidents, framing it as a pattern of safety events in a short period. Japan Today similarly says the regulator is investigating the fourth incident and highlights the frequency of occurrences over recent weeks. Both outlets focus on the regulator’s response and the involvement of air traffic control, while they do not detail the specific circumstances of each incident in the excerpts provided.