Mourners hold a vigil a day after four people were killed by a driver at a parade in Stillwater, Oklahoma.
Oklahoma governor Mary Fallin issues 37-day stay of execution for death row inmate Richard Glossip, delaying his execution for more than a month.
A giant vortex develops near a dam in Lake Texoma on the border between Oklahoma and Texas.
Disgraced Oklahoma student apologized for his action, after a meeting with civil rights leaders, saying he will carry the shame of his words for the rest of his life.
The University of Oklahoma expels two students linked to a video showing members of a fraternity singing a song filled with racial epithets.
University of Oklahoma bands together to discredit racist behavior of campus fraternity.