After an investigation triggered by a viral Facebook photo, Michigan police said that a shirt intentionally left on a young woman's car windshield was the work of pranksters. 

The Facebook post - shared more than 100,000 times in the past week - has since been removed by 19-year-old Ashley Hardacre. In the post last week, she said the shirt was intentionally tied around her wiper blade in the parking lot of the mall where she works. 

Hardacre said there were vehicles running around her, so she became suspicious. She said that she had seen warnings about kidnappers placing things on windshields as a way to lure someone out of their car. 

People then tagged loved ones to warn them about the supposed tactic used by human traffickers targeting young women. 

Police later said they located the two men who left the shirt using surveillance video.

"As a result of these interviews, they admitted to putting the shirt on the vehicle as a random prank," Flint police said, adding that the men left the area long before Hardacre arrived at her car late at night.

Hardacre wrote on Facebook that the shirt would not dislodge by running her wipers, so she drove to a safer location and removed it. 

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