Update #1 (Investigation - Maryland Avenue and Lower Oak Street): 
The vehicle involved in this collision fled from the scene, but was recovered in Bear and the driver has been located.
This incident remains under investigation by the WPD Special Operations Division/Traffic Unit, and further details will be released when possible.
Anyone with information or video of this incident, and anyone who may have witnessed this collision, is asked to contact M/Cpl. Marc Martinez at (302) 571-4413 or Marc.Martinez@cj.state.de.us
Original message (April 7):
Wilmington Police are investigating a fatal motor vehicle collision involving a pedestrian that occurred at approximately 5:07 a.m. in the area of Maryland Avenue and Lower Oak Street.
Police located a female juvenile who was struck by a vehicle. The victim is believed to be between 15 and 17 years old. The female juvenile was transported to the hospital in critical condition, and later succumbed to her injuries.
Address/Location
Wilmington Police Department
300 N Walnut St
Wilmington, DE 19801
Contact
Emergency: 9-1-1
Non-emergencies: 302-654-5151