His longtime friend, THE ROLLING STONES guitarist Keith Richards, posted on Facebook that it was a "great surprise to see Angus in Düsseldorf."

 

Angus lives in Aalten, a Dutch city situated just over 90 kilometers from Düsseldorf.

 

THE ROLLING STONES are on the road in Europe as part of the six-week 'No Filter' tour.

 

AC/DC's future remains in doubt after the band completed its world tour in support of 2014's 'Rock Or Bust', a cycle that saw a massive turnover in the group's personnel. Angus has not yet indicated whether the group will continue recording and touring.