GREENSBORO, N.C. (WGHP) — Some Greensboro roads are closed due to a police investigation, the Greensboro Police Department says. According to a press release, the north and southbound lanes of North Elm Street between Corporate Center Boulevard and Flint Street are closed at this time. Motorists are encouraged to find an alternate route and use caution if traveling in the area.  No further information is available at this time.