Conor McGregor is at the center of a police investigation in Ireland.

The UFC star recently uploaded a photo of himself to Instagram that appears to show him sitting in his BMW M8, wearing a balaclava, and pointing a firearm out of the window. The 'Notorious' McGregor captioned the photo with this: "Put the fight game in the bag and step away from the vehicle."

Now, a Garda (Irish police) spokesperson in Dublin has said the photo and McGregor's possession of a potential firearm is being investigated:

"We are investigating the circumstances under which the photo was taken. Garda from Crumlin are investigating."

The UFC featherweight champion is back in his home country after his 13-second demolition of Jose Aldo at the end of 2015.

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[via FOX Sports]