At around 5:30 a.m. on Thursday, Somerset County sheriff's deputies searched a home on North Road.
Inside the residence, authorities found 26 grams of crack cocaine, a small amount of heroin, various pills and more than $7,400 in cash.
Police say the drugs are worth $2,800.
Sheriff's Deputies then arrested five people on drug trafficking and possession charges.
They include 34-year-old Lucas Judkins and 30-year-old Tabatha Lombard, both of Detroit, as well as 21-year-old Chelsea Clements of Plymouth.
Also arrested were 26-year-old Dashawn White and 34-year-old Jamel Champagne of New York.
Lombard and Clements are being held on $10,000 cash bail. The other three are being held on $20,000 cash bail.
They are all due back in court on Nov. 14.
Authorities say this is an ongoing investigation and more charges are expected.