Two witnesses told n-tv television that they saw a man dressed as Santa Claus walking away from the scene of the shooting with a crowd of people. One said the man had blonde hair, was not carrying a weapon but had a suitcase.
The account is still visible at the Blue Lives Matter News, the Arab America News, and the Otago Daily News.
While searching on Google shows that this same phrase existed in previous online copies of articles on the Munich attack, they have been deleted from later editions. See here, here, and here, for three examples.