The police in Sydney say four passenger planes were targeted by laser lights on Friday night while trying to land at Sydney Airport.
The first incident happened just after 8.30pm local time when a Boeing 767 was coming in, the ABC reports. The police say a green laser was pointed at the aircraft.
It happened again with three other planes on their approach about an hour later. All landed safely.
The beams are reported to have come from the Bankstown area, with one apparently coming from a reserve at Georges Hall.
However, a police patrol of the area shortly afterwards failed to find any trace of those involved.
A laser was also pointed at a passenger plane as it was trying to land at the airport on Wednesday night.