The L.A. County Department of Children and Family Services has determined Mariah Carey's twins are in a healthy and safe environment, TMZ.com reports.

The DCFS launched an investigation after receiving an anonymous tip that the singer drank a beer while breastfeeding in the hospital shortly after giving birth last month. Sources tell TMZ that the DCFS determined there is no merit to the investigation.

Carey told social workers that she did drink a Guiness-but only after a hospital staffer told her that drinking a dark beer would help her with lactating. She never hid the fact she consumed the beer and it was determined she did nothing wrong.