Two men have been released after police detained them for more than an hour near the US president's hotel in Brisbane.
The men, who had two suitcases, were searched about 50m from the Marriott Hotel where Barack Obama has been staying for the G20 leaders' summit.
One of the men, who appeared to be aged in his 20s, was the primary focus of police attention.
But both men were searched, including their bags.
Police at the scene did not say why the men were detained, and the pair declined to speak to the media after police allowed them to go.
President Obama left the hotel on Sunday morning, for the G20 venue at South Bank.
