On 3 June 2022, a double decker regional train derailed north of Garmisch-Partenkirchen, near Burgrain [de] on the Munich–Garmisch-Partenkirchen railway in southern Germany.

[15] Further, the Prosecution Service assigned an independent external consultant to prepare an expert report analyzing the accident.

[16][17] A length of a few hundred metres of rail southwards from the derailment site was dismantled for the investigation and likewise secured.

[20] Even the earliest investigation, according to police information, showed that the permitted speed limit at the accident site had been observed.

[23] Also, a locomotive drivers' chatroom conversation that came to Report Mainz's attention referred to the defective state of the railway line, especially from Tutzing on south.

[25] A private analysis in July 2022 put forth the suggestion that the embankment over which the railway ran might have been undercut by the stream that runs by just there, leaving the earthworks unstable, which in turn led to the derailment.

[26] A professional opinion expressed by the Munich II prosecutor's office beginning in early 2023 holds that the embankment became waterlogged, and that this could be the derailment's cause.

"[29] On 7 June, the "Munich II" Public Prosecution Service announced that it had begun preliminary proceedings against three Deutsche Bahn employees on the grounds of reasonable suspicion of negligent homicide.