Bobbi Kristina Brown and Nick Gordon have never married, her father has claimed.

While the 21-year-old aspiring actress - who is in a medically-induced coma ''fighting for her life'' in hospital after being found unresponsive in a bathtub at her townhouse in Atlanta, Georgia on Saturday (31.01.15) - previously insisted they had wed, her father Bobby Brown's lawyer claims they have never tied the knot.

Christopher Brown of Brown & Rosen LLC told Us Weekly in a statement: ''We are currently investigating the events that led to the hospitalisation of Bobbi Kristina.

''To correct earlier reports, Bobbi Kristina is not and has never been married to Nick Gordon.''

The attorney also had a message from Bobby asking for people to show ''love and support'' for his daughter, whose mother was late singer Whitney Houston, who accidentally drowned in a bathtub in a Beverly Hills in February 2012.

It read: ''We continue to request privacy in this matter. Please allow for our family to deal with this matter and give Bobbi Kristina the love and support she needs at this time.''

Nick and a friend found Bobbi in the bath at her home, and Lisa Holland of the Roswell Police Department described him as the star's ''husband'' when revealing to Us Weekly that he had performed CPR on her.

Bobbi and Nick - who Whitney unofficially adopted when he was 12 years old - previously announced their marriage on Twitter in January 2014 and even shared a picture of themselves both wearing rings.

She tweeted: ''@nickgordon! #HappilyMarried SO #InLove. If you didn't get it the first time that is. (sic)''

The couple later insisted her grandmother Cissy Houston had given the marriage ''her blessing'', but previous reports had suggested some of Bobbi's family weren't so approving about their relationship.

Following Bobbi's hopsitalisation on Saturday, police have now launched an investigation after drugs were found at her home.

She was placed in a medically-induced coma after being found with ''no heartbeat'' and was thought to have spent up to eight minutes underwater in the bath tub.