Pop star Justin Bieber's house guest is fine following an incident where she was found unconscious.

It was previously reported that an ambulance was called at the 19-year-old's Calabasas home Saturday morning, but it now turns out that the ambulance came as a precautionary measure.

"There's no issue. A call was made out of an abundance of caution, but the woman was given some food and liquids, and she's fine and went home," usmagazine.com quoted a source as saying.

According to TMZ, a call was made for an ambulance after a 20-year-old female house guest went unconscious, but she asked for the ambulance to be called off after she regained consciousness.

The female guest was attending a party thrown by the "Boyfriend" singer, and alcohol was said to be involved with her condition.