Update: Wilmington Police say the problem has been fixed. Residents are returning to their homes, and traffic should get back to normal shortly.
Wilmington Police are asking motorists to avoid the area of 17th and Grace Streets this morning.
Crews are on the scene of a gas leak.
Homes within a block of the are are being evacuated.
Police officers are diverting traffic. Officers have shut down 17th and 18th Streets between Grace St. and Princess Place Drive.