Nick Gordon, the ex-partner of Bobbi Kristina Brown, was arrested Saturday near Orlando.
Seminole County Sheriff's Office deputies responded around 1 a.m. to calls about a possible domestic disturbance, according to reports.
Gordon's live-in girlfriend allegedly told deputies she'd picked him up from a Sanford bar and that he began to strike her on the right side of her cheek area several times.
Authorities say the woman refused to press charges, but deputies took Gordon into custody based on her statement and physical evidence.
Brown, the daughter of singers Whitney Houston and Bobby Brown, was found unresponsive in a bathtub in 2015. She died after six months in a coma.
Gordon was found responsible in a wrongful death lawsuit. An Atlanta judge ordered him to pay $36 million to Brown's estate.