Azerbaijani journalists threw a roll of toilet paper at national team coach Berti Vogts in an expression of dismay at the side's performances under the former Germany boss.
Vogts, 64, has been at the Azerbaijan helm since 2008 but has won just two competitive games in three years, with the Odlar Yurdu currently sitting bottom of Euro 2012 qualifying Group A.
Azerbaijan had been second bottom, but a 2-1 defeat to rivals Kazakhstan on Friday has left them rooted to the foot of the table and the Azeri journalists made their feelings clear ahead of the Group A clash with Germany on Tuesday.
A roll of toilet paper was flung at Vogts and he was also presented with a jug of water of the type used in Muslim countries to wash after using the toilet.
The former Scotland and Nigeria coach was quoted as calling it an "attack" in Russian newspaper Sport-Express , while Vogts has been quoted as saying he would "discuss the next steps with my lawyers".
Vogts told Germany's SID agency: "I would have long ago left if it were not for my friendship with the federation president. I have experienced many things but nothing like that. I do not have the words to describe this."
Germany coach Joachim Low told reporters in Vienna that he was shocked at the attack on his countryman.
"This is a no-go," Low said. "To attack a coach is unacceptable whatever the outcome of a match. I am surprised to hear the news. Azerbaijan may have lost against Kazakhstan but they have, for example, won a crucial game against Turkey and that shows their development that is strongly linked to Berti Vogts. So this really is a surprise."
Vogts led Germany to glory at Euro '96, having won both the 1972 European Championship and 1974 World Cup as a player, but has found himself on a downward spiral since.
Unsuccessful spells with Bayer Leverkusen, Kuwait, Scotland and Nigeria followed, before he took the Azerbaijan job three years ago.