STURGIS -- The first fatal crash during this year's Sturgis Motorcycle Rally occurred Monday afternoon, 12 miles south of Lead.

At 3:03 p.m., a motorcycle southbound on North Rochford Road near its intersection with Old Salt Road, failed to negotiate a turn, crossed the road's center line and slid into a ditch, according to the South Dakota Department of Public Safety. The 29-year-old male driver, who was not wearing a helmet, was thrown from the motorcycle and pronounced dead at the scene.

Three injury crashes also took place in the area Monday, making a total of 18 since Saturday. One of those crashes caused a section of Interstate 90 a mile east of Spearfish to be closed for 45 minutes Monday morning.

The number of drug arrests at the rally has continued to outpace last year's, with 54 felony and 104 misdemeanor drug arrests made as of 6 a.m. Tuesday, compared to 32 and 83, respectively, made by the same point in 2018. A second vehicle has been seized for drug possession, and 72 DUI arrests have been made in Sturgis and the Rapid City area.