There's a jail in the stadium where arrested parties go for processing and they get an appearance ticket or a ride to the holding center downtown.
People forget that the Bills stadium is fully owned by a government entity and the Bills only lease time there.
The link below gives you an idea of the tech the Sheriffs have available to them at games. You can zoom in to read name tags. This isn't what the Sheriffs use. Their software is better.
https://gigapixel.panoramas.com/buffalobills/20250907/