TINLEY PARK, IL — Several attendees at Tinley Park’s Ribfest Thursday experienced medical issues due to the heat, Village Manager Pat Carr told Patch.

Twelve people reported feeling faint and other heat-related symptoms, Carr said. Tinley Park Fire was called, and all affected have been treated on-site, Carr said. None required transport for treatment elsewhere, he added.

Carr called the crowd an “unbelievable amount of people” in the first day of the four-day fest. The fest runs through Sunday, in the north parking lot at the 80th Avenue train station, 18001 S. 80th Ave.