When officers responded to the business Thursday to assist employees with the man, he claimed he was the drummer for the 1980s-era hard rock band Whitesnake.
The Gloucester Times reports that a quick check of records indicated that that was not true.
The man, who had no known address, had been asked to leave an apartment building earlier in the night when he was found sleeping in the doorway.
The unnamed man was taken to a hospital for evaluation.
Information from: Gloucester (Mass.) Daily Times, http://www.gloucestertimes.com