Sheikh Saud Al-Thani is being investigated for alleged misuse of public funds

They stand accused of faking an inscription on an antiquity for financial gain

In the latest incident, eight Italian Renaissance plaquettes worth £500,000 were taken

Missing objects valued at £60,000

NY District Attorney promises amnesty for those who come forward while corporate executive Samuel Waksal enters a guilty plea for tax evasion

Williams will not appeal French court decision, citing health reasons

Unrecovered paintings stolen in Frankfurt, 1994.

The opening of a file on James McNeill Whistler, embargoed for a century, reveals him to have been a violent brawler, a racist and a gun-runner

The secret behind Sotheby’s contemporary art sale in New York, 6 May.

Grab and smash operation on 11 November

The reluctant collector: “The ugliest things I ever did see....only good for chasing away ghosts”