Qantas CEO Alan Joyce's mansion was pelted with eggs and toilet paper, Sky News Australia reported.
Pictures show litter on the roof and garage door of the mansion the next day, per the report.
Airline passengers across the world are suffering from a summer of travel chaos.
A $19 million mansion owned by Qantas Airways' CEO was pelted with eggs and toilet paper earlier this summer, Sky News Australia reported.
CCTV footage obtained by Sky News shows an individual throwing several rolls of toilet paper and some eggs onto Alan Joyce's property, which is located in Mosman, a suburb of Sydney, Australia. The incident was said to have taken place in the early hours of July 12.
The unidentified culprit then got into a dark-colored vehicle and drove off, Sky News reported.
Pictures were taken of the property the next day, showing toilet paper, eggs, and another unknown substance littered on the roof, per Sky News, which included the images in its report. One of the garage doors was also hit with a red substance, according to the report.
Sky News reported at the time that police were investigating the incident. However, they have so far failed to identify the culprit, Bloomberg reported Wednesday.
"The case will remain closed unless further information is provided," police said in a statement to Bloomberg.
Qantas and Joyce didn't immediately respond to Insider's requests for comment made outside of normal Australian operating hours.
Sky News reported that Joyce and his partner Shane Lloyd purchased the mansion, built in 1908, for $19 million.
The incident occured as airlines, including Qantas, were grappling with staffing shortages amid a busy summer travel season — something that continues to this day.
Passengers who have flown with Qantas have reported various issues, including lost luggage and delays. In one incident involving Qantas, a 13-month-old baby was booked on a different flight from her parents.
Qantas recently asked its senior office staff to step in as full-time baggage handlers at airports for three months. The carrier told Insider that about 200 Qantas office employees have been helping out at airports since Easter.
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