He returned later in the day and that was when he beheaded Colleen Hufford.
Via Truth Revolt:
On Friday morning, police in Moore, Oklahoma released the identity of the suspect in the brutal beheading of a woman at her workplace: Alton Nolen, who now goes by Jah’Keem Yisrael. Nolen is a convert to Islam, and local press reports that he had attempted to convert other employees at Vaughan Foods, where the murder took place. […]
Local newspaper McCurtain Gazette reports (no online edition is available):
A classmate of Nolen’s, who didn’t wish to be identified, told this newspaper that he spoke to a close family member of Nolen’s today.
He told this newspaper that according to the family member, Nolen was telling coworkers Thursday of an Islamic teaching that said women should be stoned for an offense, and that an argument followed the mark, Nolen was later fired and returned later Thursday, when he beheaded Colleen Hufford, the family member said.