The excitement of a four-game sweep by the Cubs at Wrigley Field was short-lived as a bomb threat caused the 100-year-old ballpark to be evacuated on Sunday.

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At around 5:45 p.m. CT, the grounds crew was rushed off the field and security told the media to evacuate the stadium as bomb-sniffing dogs explored around the ballpark in the wake of a bomb threat, according to MLB.com.

The scare came after the Cubs defeated the Giants, 2-0, to complete a four-game sweep of the defending World Series champions, and the search lasted nearly an hour before people were allowed back in.

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"Following our game this afternoon, we received a bomb threat and took swift action to clear the few remaining fans, players, staff and media from the ballpark," the Cubs said in a statement per MLB.com. "After a thorough search by law enforcement, no evidence was found to suggest this threat was credible. We take safety at Wrigley Field seriously and are working with law enforcement authorities to pursue the person who initiated this threat."

The Cubs just wrapped up the first four contests of a seven-game homestand and they host the Brewers for three games starting on Tuesday.

There was heavy police presence around Wrigley Field after the evacuation and the threat came after over 39,000 fans attended the game.

The Cubs (62-48) finished Sunday in third place in the NL Central, but they own the second and final wild-card spot in the league with a 3.5-game lead over the Giants.

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