Police presence

This morning around 730a northbound on Glassford Hill I saw a State Trooper and an unmarked blacked out SUV with searchlight also northbound. Southbound I saw a marked Police SUV and an unmarked white Dodge truck with headache rack and tool box in the bed that had someone pulled over. All between Walmart and the 89a. Why this high law enforcement presence? What is going on in our town? Any thoughts?