Supporters say a British-Australian man held in Dubai over a charge related to his charity advocacy has been freed on bail.

Radha Stirling, of the advocacy group Detained in Dubai, says Tuesday that Scott Richards is back in his Dubai home with his family.

Stirling says no trial date has been set in Richards' case, which involves his advocacy for a charity buying tarps for those living in Charahi Qambar, a community of mud homes near Kabul, Afghanistan.

Richards' case appears to be the first prosecuted under a new Dubai law that regulates charities amid regional concerns about cash donations reaching extremists.

However, his supporters say the regulations can be applied to anyone wanting to do good by donating to international causes or even talking about them online.