Springfield, Okla. — A woman is arrested in connection to a Tulsa homicide.

Authorities in Springfield, Missouri, arrested Ruth Blair Tuesday.

We're told Blair and another suspect identified as Nicholas Gibson were barricaded inside a home.

Gibson managed to escape.

Police say Blair, Gibson and Leanna Roacher killed 53-year Michael Bender during a robbery last June at the Cascade Apartments.

Roacher was arrested last month.

U.S. Marshals are looking for Gibson.