Lady Gaga has been criticised by Thailand's Culture Ministry over what it says was her inappropriate use of a Thai flag during a Bangkok concert.

The Bad Romance singer wore a traditional Thai headdress and a bikini and sat on a motorcycle with a Thai flag tied to it during the show last month.

The ministry says the act was "not appropriate and hurt the feelings of the Thai people".

The ministry's Permanent Secretary Somchai Seanglai said his agency gave police a summary of public complaints it received.

Somchai said the ministry does not intend to seek legal action against the American pop diva.

Gaga's Asian tour has been wildly popular but also raised objections. An Indonesian show was cancelled after Muslim hard-liners denounced it.