It had emerged that two commercial airlines in Australia nearly collided near Gold Coast airport last month.

According to officials from the Australian Transport Safety Bureau, a Qantas Boeing 737 and a Virgin Australia Boeing 737 came dangerously close on 29 July. The agency said that official investigation of the incident is underway and that there were more than 300 people onboard the two planes combined.

Both of the flights were bound for Brisbane airport from Melbourne and were ordered to enter holding patterns over Coolangatta prior to being given clearance to land. Officials said upon entering the pattern that the pilot of one of the jets reported that the other was seen within 300 metres, which is inside the minimum distance as set by aviation regulations.

Air traffic control then gave instructions to each flight in order to provide safe separation, to which both responded quickly, according to Thomas Woodward, spokesman for Qantas. He added that crewmembers from both flights had complied fully with air traffic control instructions and thus no there was no significant safety risk. Virgin’s spokesperson issued a similar statement this week.

Passengers onboard the two flights have not been notified of the ordeal and likely are still unaware of the incident. ATSB officials have said the investigation should take about 12 months to complete and if any further action was required the matter would be referred to the Civil Aviation Safety Authority.