Updated

Deutsche Bank co-chief executive Juergen Fitschen has expressed regret over a phone call he made to a senior German politician following a raid at the bank's offices last week.

Fitschen told daily Frankfurter Allgemeine Zeitung in an interview published Wednesday that he wanted to "expressly apologize" if people thought he tried to exert political influence on a legal case.

The 64-year-old told the paper that he called Hesse state governor Volker Bouffier to express his "deep dismay" at the impression that the raids by 500 officers a week ago would make abroad.

The bank confirmed his comments.

Fitschen and chief finance officer Stefan Krause are among 25 people being investigated in connection with tax evasion, money laundering and attempted obstruction of justice in the trading of carbon emission certificates.