The tournament was overseen by Euro 2024 GmbH, a joint venture between the DFB and UEFA.
State prosecutors and police said the inquiry focuses on municipal staff who improperly accepted tournament access from the organizing body.
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"The investigations concern alleged unauthorised favours including attendance to a football game among others that an accused individual, who was working for a host city at the time, is said to have received from officials of the organising entity," prosecutors in Bochum and police in North Rhine-Westphalia said in a joint statement.
Authorities noted that preferential access was systematically offered to specific municipal administrations involved in hosting the event.
"In addition, the host cities are said to have been offered exclusive pre-purchase rights for tickets by those responsible at the organising entity," the joint statement added.
The German suspect was already known to local police following previous separate allegations involving fraud and the withholding or embezzlement of wages.
North Rhine-Westphalia Interior Minister Herbert Reul affirmed that public officials face strict penalties for accepting tournament perks.
"A football ticket is not part of one's salary.
Anyone in the public sector who has their hand out will get a visit from us," Reul told Bild.
The minister emphasized that the integrity of major sporting tournaments depends heavily on the transparency of public administration.
"Major events like the European football championship, in particular, rely on public trust – trust in the sport and in the authorities that make it possible.
We will not allow that trust to be damaged by a few invitations and tickets," Reul said.
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The judicial raids took place two days after the German national team was eliminated from the World Cup following a penalty shootout defeat against Paraguay.
