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The hits just keep on coming for Miranda Lambert. Just days after a tabloid accused her husband, Blake Shelton, of having a wandering eye, the National Enquirer claims the country blonde threatened to punch someone's lights out. According to tab, Miranda had a verbal altercation on March 5 with a woman who just opened an antique store a few doors down from the singer's Tishomingo, Okla., clothing boutique, The Pink Pistol.

"She had a complete meltdown and threatened to 'punch me in the mouth' if I kept talking," alleges shop owner Melanie Peden. "I was stunned and a little bit scared, too. ... But I stood my ground and asked her to leave my store."

Lambert was supposedly upset that Peden purchased the property, even though the singer hadn't gone into contract on the space after checking it out four years ago.

"She just walked around the place scowling at everything and finally blurted out that I stole this property from her," Peden contends to the tab. "I was shocked when she became so angry with me for buying it so many years later."

Peden filed a police report over the purported pow-right-in-the-kisser threat, but authorities in Tishomingo tell E! News that there's no evidence to support her claim.

"Both the District Attorney and the City Attorney reached the same conclusion that no crime was committed," explains an investigator.

Lambert's rep did not respond to our request for comment.

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