Jay West/WireImage
Ariana Bacle
March 11, 2015 AT 12:00 PM EDT

Slipknot guitarist Mick Thomson was stabbed in his head by brother Andrew Thomson outside Mick’s home in Cliva, Iowa Wednesday morning at about 4:25 a.m., Clive’s Chief of Police Michael Venema confirmed to EW. Both appeared to have injuries “consistent with a fight,” the Clive Police Department said in a release on their Facebook page, but none of the injuries are life-threatening.

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