“At approximately 7 a.m. this morning, an unarmed individual illegally entered Miller Park and gained access to the playing surface. He was apprehended a short time later after causing minor damage to the field. As this involves an ongoing investigation, we unfortunately cannot provide further details at this time.” 
Milwaukee, like many American cities, has been the site of protests over the police killing of George Floyd over the last week. MLB.com’s Adam McCalvy reports that there is a “strong belief” that the incident was “totally unrelated” to protests. 
An individual in Milwaukee on Tuesday morning found a way into Miller Park, home of the Brewers, and got all the way to the field before being apprehended. The team says the person caused “minor damage” to the playing surface.
Miller Park, along with every other MLB stadium, has sat empty this season with the league shutdown due to the coronavirus pandemic. The MLB Players Association and MLB owners are currently in their fourth week of negotiations about a potential 2020 season. You can find the latest updates on those talks here. Here’s the statement from the Brewers