A woman was pushed to the ground and a man was punched in the face during an assault at a taxi rank in Selby.
The incident happened at the James Street taxi rank in the town centre at around 1.25am yesterday.
North Yorkshire Police today said that the man had required hospital treatment for facial injuries.
Now officers are asking for the public's help in identify two suspects who are believed to be responsible.
The first is described as a white woman, aged in her 30s to early 40s, around 5ft 10in and of medium build. She had long, straight, blonde hair and wore a white floral tunic top and jeans.
The second is a stocky, white man, possibly aged in his 40s and around 5ft 10in. He had short, dark hair and wore a blue polo shirt and jeans.
Anyone with information which could assist the investigation should contact North Yorkshire Police on 101, select option 2 and ask for PC Alison Baker. You can also email Alison.Baker@northyorkshire.pnn.police.uk
Information can be passed anonymously to the independent charity Crimestoppers on 0800 555 111.
Please quote reference number 12180133387 when providing information.