A security guard at Samuel Adams Brewery in Fogelsville was assaulted by a truck driver early Wednesday.
Police say the incident occurred at around 4:30 a.m. at the brewery in the 7800 block of Penn Drive.
The security guard, described as a 24-year-old Asian male from Center Valley, and a truck driver got in to a disagreement about a load leaving the brewery, which then escalated in to a physical altercation.
Police say the truck driver, described as a black male between the ages of 47 and 53, five feet eleven inches tall and 210 pounds, fled the scene before police arrived at the scene.
The security guard suffered minor injuries.
Upper Macungie Township Police are investigating.