"very convincingly dressed as a police officer... driving what looked like a police SUV with emergency lights activated."

https://kstp.com/kstp-news/top-news/speaker-emerita-melissa-...

Edit - they have the SUV but the not the shooter. Police found him at the second address and exchanged gun fire with him before he escaped on foot.

Edit2 - SUV contains a list of targets, a manifesto, and many pieces of paper with 'No kings' printed on them. https://x.com/MnDPS_MSP/status/1933918239504929129