In the past three weeks six people have died a heroin overdose in Delaware.
Authorities say they believe they deaths were caused by two types of the drug because the same stamp on has been found on the heroin bags.
The Wilmington News Journal reports that five of the deaths occurred in New Castle County and one in Sussex County.
Patrick Trainor with the Drug Enforcement Administration office in Philadelphia told the paper that such stamping leads to brand loyalty.
Authorities have not yet determine the type of heroin involved in the deaths.
This brings the death toll from drug-related overdoses to 125 for the state of Delaware so far this year.
Last year the First State logged over 300.
