Johnny Depp's seven-year-old daughter Lily-Rose has been hospitalized with a serious illness, reports U.K.'s Daily Mirror.

Depp and his partner Vanessa Paradis have not left her side since she was rushed to a U.K. hospital nine days ago.

The article cites an anonymous source at the hospital who said: "The staff immediately recognized him when he walked through the door. He has not asked for any special favours but just wants the best for his child, like any parent.

"It is such a difficult time for him but he is hanging in there for the sake of his daughter and the whole family is just praying that she gets better. They are taking each day as it comes.

"It's been an emotional rollercoaster for all of them and he's been worrying himself silly. He wouldn't wish this on anyone and has been finding it hard keeping it together. He's a devoted dad and is spending as much time as he can with Lily."

The article further reports Depp, who is currently filming "Sweeney Todd" at Pinewood Studios, has been using staff entrances while accompanied by security staff.

Details on Lily's illness have not been released.