Bobby Brown is reportedly preparing to turn off his daughter's life support over the weekend.

Bobbi Kristina Brown

Bobbi Kristina Brown

The 45-year-old musician has been left devastated after doctors allegedly told him there's nothing more they can do for Bobbi Kristina, 21, who has been in a medically-induced coma for six days after she was found face down in a bathtub at her home in Georgia last Saturday (31.01.15).

A source told PEOPLE.com: "Everyone is coming to the hospital to say goodbye [to Bobbi]. Bobby has been crying nonstop since yesterday. We are grieving."

However, despite being given the heartbreaking prognosis, Bobby and his family are still hopeful Bobbi - who was transferred to Emory University Hospital in Atlanta, Georgia, on Tuesday (03.02.15) due to their world class neurological department - will come out of her coma and make a full recovery.

A family insider added: "It's sinking in that this is it but we're all still praying that God will intervene and heal her body."

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

Meanwhile, the tragic incident comes three years after Bobbi's mother Whitney Houston passed away in a bathtub at the Beverly Hilton Hotel in Beverly Hills on February 11, 2012.

The Los Angeles County coroner's office later confirmed the 'I Will Always Love You' hitmaker died as a result of drowning and "effects of atherosclerotic heart disease and cocaine use".