The Milford Police Department has responded to three heroin overdose incidents since Aug. 21, leading the department to alert the public that there may be a potent and potentially lethal batch of heroin circulating in the area.

In the three most recent cases, individuals were revived with the use of Narcan and were able to seek further medical treatment.

Milford police warned people to use caution if they or someone they know comes in contact with heroin. Investigators continue to look into the markings on bags seized at one of these incidents.