The Standard and Poor's building is seen in New York
The Standard and Poor's building is seen in New York, August 8, 2011. REUTERS

(REUTERS) -- Credit rating agency Standard & Poor's is set to downgrade several Eurozone countries, not including Germany, on Friday, a senior Eurozone government source said.

The source did not say which countries' debt ratings would be downgraded.

(Reporting Matthias Sobolewski, writing by Annika Breidthardt)