Southold police say six people have died from overdoses in past seven days on Long Island.

They say the deaths were all possibly linked to a batch of cocaine laced with fentanyl purchased in the village of Greenport.

Authorities say eight people in total have overdosed in the Town of Southold and Shelter Island, including the six who died - who are between the ages of 25 and 35.

Southold police says they're working with Suffolk police and the District Attorney's Office to find the source of the drug.

Police and the District Attorney's Office are asking anyone who bought cocaine recently on the North Fork or Shelter Island to get rid of the product and call Southold police at 631-765-2600.