UPDATE: Investigators Say the Union County Explosion Wasn't a Bomb

A bike rally in western Kentucky is back to normal after a bomb scare Friday evening. Kentucky State Police say it sent the bomb squad unit to the Kentucky Bike Rally in Sturgis after a reported explosion happened near some bleachers. K-9 units were also on the scene. Kentucky State Police say after investigating at the fairgrounds, the loud explosion was caused by fireworks. Rally officials say they are upset that a few bad bikers put a negative light on their event. The two wheels are in full force and revved up for the Kentucky Bike Rally in Sturgis. There's music, hot rides and thousands of people and officials say a few of them are to blame for causing a stir at Friday's events. Kentucky State Police say it can never be too sure. There are no suspects at this time. Carlene Thomas puts on the event and says security is most important when dealing with large crowds. For some making their first trip to Sturgis, they say they've felt safe the entire time with the security and police presence. The Kentucky Bike Rally employs its own event security along with Kentucky State Police, it also has transportation services to keep all of their guests safe. There's no property damage from Friday's events, but troopers say they are not putting their guard down. The fun can go on, but as long as everyone is safe. KSP says its still investigating the explosion and eager to catch whoever is responsible because its unclear if the suspects intended to hurt anyone or if they're armed with more fireworks. Rally officials say this should no way stop you from coming out, there's live band performances all weekend long.