FRANKFURT — The authorities in Germany raided homes and banks around the country on Wednesday in a tax evasion investigation that originated with Deutsche Bank but has widened to involve other lenders.

The raids targeted 11 financial offices in Bonn, Cologne, Düsseldorf, Frankfurt and other cities, prosecutors said. They did not name the banks, but said that some were local public-sector savings banks known as sparkassen, indicating that Deutsche Bank is not the only institution involved.

Deutsche Bank, which the German police raided in November for possible links to tax evasion, said its offices had not been searched on Wednesday.

“The investigations are not directed against Deutsche Bank,” it said in a statement. “Deutsche Bank cooperates with the public prosecutor’s office and voluntarily submits all requested documents.”