The Atlanta Police Department warns visitors to the NCAA Final Four basketball tournament to prepare for a crowded downtown in excess of 100,000 people a day and heavy traffic congestion during the five-day event.

APD advisers buying tickets from reputable sources, noting counterfeit tickets have become sophisticated and hard to spot.

In addition to the two semi-final games on Saturday there will also be a series of free concerts at Centennial Olympic Park. The NCAA Bracket Town at the Georgia World Congress Center is also expected to draw large crowds.

Traffic volume will also increase due to a Braves home game every night from Thursday through Saturday, an afternoon game on Sunday as well as a Hawks game on Friday evening. There will also be a 5K race starting in Downtown Atlanta Saturday morning at 7:30 a.m.