DERBY, Kan. (KSNW) - Emergency crews are on the scene of a crash near Derby that has injured three people. It happened around 5 p.m. near the intersection of 55th Street and Oliver Street. Sedgwick County Dispatch confirms that two people were seriously injured, and one person was critically injured. The public has been asked to avoid the area while crews work the scene. This is a developing story. KSN News has a crew headed to the scene and will update this story with more information once it is confirmed.