According to The Sun, police stated that a 35-year-old woman - understood to be Kerry Katona - “sustained bruising to her face and arms” in the assault.
A police spokesman said: “On Saturday police were called to an address in Gorsedene Close, Crowborough, after a report that a woman had been assaulted.
“A 35-year-old man was arrested at the address on suspicion of causing actual bodily harm to a 35-year old woman, and of unlawful possession of a Taser.
“He was later released on police bail until 24 October while enquiries continue."
They added: “The woman had sustained bruising to her face and arms.”
Kerry, who has two children with her ex-husband and Westlife star Brian McFadden and two more with her former husband cabbie Mark Croft, married George Kay in September 2014.
The former Atomic Kitten star shares one-year-old daughter Dylan-Jorge Rose with the ex-rugby player.
While Kerry has yet to make an official comment on the incident, she did share a photograph of her family - excluding George - on Twitter.
She tellingly captioned it: “My world.”