Because they have remained loyal despite waiting more than 100 years for their team to win another World Series, Chicago Cubs' fans are considered one of baseball's best fan bases — cult-like even. But would they go so far as to send a severed goat's head to Cubs owner Tom Ricketts. Yes, apparently they would.

A man dropped off a package at Wrigley Field on Wednesday afternoon, asking a security guard to deliver it to Ricketts. Once team officials opened the package, they discovered it contained a goat’s head, prompting the Cubs to call police and police to investigate the incident. No suspects have been named or motive concluded, but the Cubs recently announced planned renovations to Wrigley Field, including the obstruction of the seats fans often use to watch games from rooftops outside the ballpark.

Oddly enough, goats and Wrigley Field are forever linked. During the 1945 World Series between the Cubs and the Detroit Tigers, owner Billy Sianis of the Billy Goat Tavern watched a World Series game with his pet goat. After team officials asked Sianis to leave before the game ended — because, goat! — he allegedly placed a curse upon the Cubs, who haven't returned to the World Series since.

There have been many goat-related efforts by fans seeking to "remove" the curse from the Cubs, including at least two incidents in which butchered goats were hung from the statue of legendary Cubs' broadcaster Harry Caray ("Haaaay! Get a load of the entrails on Billy, here!"), but the team has yet to produce a World Series victory. Baaa—d luck, indeed.