Australian capital Canberra's airport was evacuated and a man arrested after gunshots were heard in the main terminal building, police said on Sunday.
One person has been taken into custody and a firearm was recovered, the police said in a statement. There have been no reported injuries, it added.
Police said CCTV footage has been reviewed and at this time the person in custody is believed to be the only person responsible for the incident.
"The Canberra Airport terminal was evacuated as a precaution and the situation at the airport is contained," the statement said.
The police said members of the public were not allowed to got to the airport at this time. No further details were available.
Videos posted on social media earlier in the day showed police detaining a man inside the airport as travellers look on. Media and onlookers also gathered outside the airport following the evacuation.
The incident has led to delays and cancellations of flights, media reports said.
An Israeli airstrike killed at least 26 Palestinians, including children, in a house in Shejaia in Gaza City, local health authorities said on Wednesday.
President Volodymyr Zelenskyy said that Ukrainian forces had captured two Chinese men fighting for Russia in eastern Ukraine, potentially threatening a fragile peace effort in the three-year-old war.
As calls for Lebanon's Hezbollah to disarm gain momentum, a senior Hezbollah official told Reuters the group is ready to hold talks with the Lebanese president about its weapons if Israel withdraws from south Lebanon and stops its strikes.
Russian forces staged huge drone attacks on eastern Ukraine late on Tuesday, triggering fires and injuring at least 22 people, regional officials said.
United Nations Secretary-General Antonio Guterres has rejected a new Israeli proposal to control aid deliveries in Gaza, saying it risks "further controlling and callously limiting aid down to the last calorie and grain of flour".