A single shot was fired through a large window at the Obama campaign field office in Denver, Colorado, reports the Denver Post.
Three people were allegedly inside, but there were no injuries, said Denver police spokeswoman Raquel Lopez.
“It looks like it was one shot that was fired into the structure,” she said.
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Lopez says there is a “possible vehicle of interest” and authorities are looking at surveillance and following leads to bring the perpetrator to justice.
The shot was fired at approximately 3:00 p.m. Friday afternoon, according to the Post. The window was being replaced before close of business.
A spokesperson for the Obama campaign has refused to comment.