MINNEAPOLIS (WCCO) — Officials in Anoka County are investigating after multiple people died from heroin overdoses this month.

On Wednesday, the Anoka County Sheriff’s Office says that in the last 10 days, there have been four deaths linked to heroin use.

The victims in the overdoses include 39-year-old Justin Rusco of Blaine, 28-year-old Elliot Patrick Sorenson of Blaine, 31-year-old Manshak Dahip of Coon Rapids and 29-year-old Jeremy Viner of Ramsey.

Douglas says that the cause and manner of the death of the aforementioned victims has yet to be determined by the medical examiner, but heroin use is a “significant factor” in each death.

“Excluding the most recent reported events, there were 17 deaths attributed to drug overdose in 2018, with nine of those indicating heroin overdose,” Lieutenant Daniel Douglas said.

The deaths remain under investigation.