A group of prison officers are being investigated after claims they partied wearing T-shirts with "We have Madeleine McCann" written on them.
Photos of the staff were posted on Facebook for two months before their bosses at Wandsworth Prison in south London were alerted, according to a report in the Metro.
One officer has been sacked and four others have been disciplined, it was reported.
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A prison colleague told the paper: "It makes me sick to think just because they work for the prison service that they should get away with this disrespectful behaviour."
A Prison Service spokesman said: "An investigation has taken place at HMP Wandsworth and appropriate disciplinary action has been taken following an incident concerning a number of prison officers outside of working hours and away from the prison.
"Until the disciplinary process is completed we are unable to comment further."
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