Police are hunting a man who is accused of mimicking "making a noose" before grabbing an African-American woman around the neck.
Police in Kentucky have said they are trying to find a man pictured in CCTV footage as part of their enquiries into a possible hate crime.
Authorities said the woman, who was working in Lexington Walmart, said the man approached her table after she asked him a question.
The employee said the man made motions with his hands and said he was making a noose. The man then leaned forward and briefly placed his hands around the woman's neck, police said.
A video of the incident which took place on January 29 was released on Wednesday in an effort to identify the man.
