A source tells Us, "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."
The local sheriff's department told Us that they never visited Bieber's home and has no information about the incident.
TMZ reported that the ambulance call was made after a 20-year-old female house guest went unconscious in the "Boyfriend" singer's home. When the woman regained consciousness, she asked for the ambulance to be called off.
According to TMZ, the female guest was attending a party thrown by the 19-year-old star, and alcohol was said to be involved with her condition.
This article originally appeared on Usmagazine.com: Justin Bieber's House Guest Is "Fine," Ambulance Called "Out of an Abundance of Caution," Source Says