Morning 3: UNC basketball champion arrested after illegal sports betting scheme -- and other news

A former UNC basketball champion was arrested as part of an illegal sports betting scheme involving six people. A Charlotte medical student is biking 4,000 miles across the U.S. to raise colorectal cancer awareness. A 'catastrophic' wastewater spill released 6,000 gallons into a North Carolina lake, closing a swimming area. Extreme heat is expected for the Fourth of July weekend, with temperatures reaching 100 degrees in Charlotte.