GRASS VALLEY (CBS13) — Three people are under arrest and a young child has been taken into protective custody after a drug arrest in Grass Valley.

The Grass Valley Police Department says detectives served a search warrant at a home in the city on Thursday afternoon. Exactly what prompted the search has not been disclosed, but three adults were found at the home.

Detectives say they discovered about 2 ounces of fentanyl along with a small amount of meth. Evidence of sales of a controlled substance was also found.

All three people - 40-year-old Jeff Gates, 37-year-old Jacob Gates, and 31-year-old Erica Coker - have been arrested.

A 1-year-old child has also been taken into protective custody by Nevada County Child Protective Services as a result of the arrests.