(CBS)— Something of a ghoulish surprise arrived at the friendly confines today and people are wondering if it was a prank or something else.

At 2:30 p.m. at Gate K, police say a package containing a goat’s head was dropped off. It was addressed to Cubs owner Tom Ricketts.

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Police were notified and called it a report of an “intimidating package.”

It came on a day when the Cubs faced a disappointment. Their 7 p.m. game with the Brewers was put off because of cold and rain in the forecast.

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Did all of this have something to do with the legendary day back in 1945 when restaurateur Billy Sianis brought a goat to Wrigley and got tossed out?

That led to Sianis barking out a curse that the Cubs would never win a World Series at Wrigley.

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The goat’s head was delivered by an unidentified man driving an unmarked truck. There is surveillance video of the incident as it happened.