Deputies informed him a search warrant would be obtained for an evidentiary blood draw.
A first-offense OWI in Wisconsin is classified as a civil infraction, not a criminal charge, carrying traffic citations.
Following the incident, Romo withdrew from the 56th M&P Group Texas State Open golf tournament in Tyler, Texas.
A spokesperson for Cascades Country Club confirmed the withdrawal and cancellation of a scheduled Q&A session, stating, "Although we’re disappointed he won’t be joining us, we’re still looking forward to an exciting week of competitive golf."
Uncertainty surrounds Romo's short-term media appearances, but sources indicate his long-term position with CBS Sports is unchanged.
An unnamed source told the Daily Mail, "He might step back a little, short term, but he isn’t going anywhere long term."
Romo reportedly contacted network management shortly after the incident. Another source said, "He contacted his bosses almost immediately to let them know what had happened...
He’s already canceled his appearance at the golf tournament...
and over the next few weeks he’s looking to keep a low profile while focusing on getting himself ready for the upcoming season."
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Romo is scheduled to appear in court on Sept. 21 regarding the citations.