The Charity Commission has launched an official investigation into Labour MP George Galloway's Mariam Appeal following months of uncertainty.
After a complaint that the appeal's funds might have been used to pay Galloway's travel expenses, the commission opened an initial evaluation in April in order to establish whether any of the money collected should be deemed charitable funds.
A formal investigation will now aim to discover whether these funds were used for charitable purposes.
The Mariam Appeal was set up to provide treatment in Britain for an Iraqi child suffering from leukaemia.
The appeal is not registered as a charity, but the commission has jurisdiction over it as it is deemed to have a charitable purpose.
The evaluation into the fundraising and application of money collected in the name of the appeal is continuing.