Police are investigating the strange delivery of a goat’s head to Wrigley Field.

Usually when people talk about goats and the Chicago Cubs, they tell the story of the “Billy Goat Curse.” The scene is the 1945 World Series, Chicago Cubs vs. Detroit Tigers. The owner of the Billy Goat Tavern wanted to attend game four with his beloved pet goat. But when Cubs officials wouldn’t let the goat in, he cursed the Cubs, saying they’d never win another World Series. Thus began a decades-long championship drought.

This time around the goat in question was dead, and its head was packed in a box addressed to team chairman Tom Ricketts. Ricketts is currently locked in contentious negotiations with city officials and neighborhood businesses about a $300 million dollar renovation of Wrigley Field.

A police spokeswoman says officers responded at about 2:30 p.m. Wednesday to a call about an “intimidating package.”

The investigation about the goat’s head is ongoing.