The unscheduled air show occurred about 9 p.m. Thursday over the Minnesota Bluegrass & Old-Time Music Festival at El Rancho Mañana near Richmond, according to the Stearns County Sheriff's Office.

The pilot, a 28-year-old man from Biwabik, Minn., was arrested upon landing his ultralight at a campground north of the stage. He was in jail Friday on suspicion of flying high, or what legal authorities call operating an aircraft under the influence of alcohol.

Festival executive director Jed Malischke was on the scene and said the overhead intruder "flew over the area a couple of times" in a five- to 10-minute span and did not come close to anyone in attendance. Malischke described the mode of transportation as "a parachute kind of thing."

Paul Walsh