Actor Andy Griffith has died, a close friend told WXII-TV in North Carolina.

Former University of North Carolina President Bill Friday said Griffith died Tuesday morning at his home on Roanoke Island.

Details surrounding Griffith's death aren't yet known, but Dare County sheriff's officials told WXII-TV that emergency medical services were called to Griffith's home Tuesday morning.

Griffith, best known as Sheriff Andy Taylor in "The Andy Griffith Show" and as the title character in "Matlock," was 86.