The head of a goat was left inside a box for ChicagoCubs owner Tom Ricketts.
An unidentified person dropped the box off with security at Wrigley Field and asked that it be given to Ricketts. The police were called instead.
The Chicago Tribune reports that the goat had a Department of Agriculture tag on its ear.
Neither Ricketts nor the Cubs have commented.
Billy goats and the Cubs have been unfortunately linked since 1945, after Chicago tavern owner Bill “Billy Goat” Sianis pronounced a curse on the club on October 6 of that year.
The team’s record hasn’t been the same since, and it has garnered the nickname “the Lovable Losers.”
Fans have made many attempts over the years to put an end to the curse, according to the Cubs’ website.
A Chicago charity, Reverse The Curse, was founded in 2011 and donates goats to impoverished communities around the world in the name of stopping it.
Last May, a group of five Cubs fans took a goat named “Wrigley” on a trek across the country in an attempt to lift the curse. It didn’t work.
The Chicago team finished the 2012 season with 61 wins and 101 losses.
The CNN Wire contributed to this report.