Police are appealing for information after threatening and racist language was used against two men in a city bar.
This incident took place in Wahoo bar in Silver Street, Lincoln, in the early hours of March 6.
Police say an Asian man racially abused two white men and then threatened them with violence.
The suspect is described as about 5ft 10in tall and skinny, with black spiky hair. He was wearing a blue T-shirt and black jeans.
Wahoo reopened in January on the premises of the former Chicago Rock Cafe, going under new management.
Anyone with any information on the suspect can call Lincolnshire Police, quoting incident number 308 of March 6 and asking for PC Hayley Bracegirdle.