Twenty-nine police officers have been suspended in Germany for sharing pictures of Adolf Hitler and doctored depictions of refugees in gas chambers on their mobile phones, officials in the state of North Rhine-Westphalia said on Wednesday.

They are also accused of using far-Right chatrooms where extremist content, such as Swastikas and other Nazi symbols, that breaches the German constitution was shared.

The incident is embarrassing for German police and security agencies, which have faced accusations of not doing enough to unearth potentially violent nationalists in their ranks.

“This is a disgrace for the NRW police,” said NRW interior minister Herbert Reul, announcing an investigation against 29 male and female officers.