SPRINGFIELD, Ore. -- The number of heroin overdoses is growing from this weekend in Lane County. Saturday alone, five people nearly died from overdosing in Springfield.

Springfield police sergeant told KEZI 9 News that three more cases happened overnight, and Lt. Scott McKee said another overdose happened Monday morning.

The sergeant said there is a bad batch of heroin going around, and there could be many more cases they do not know about.

Police say fentanyl, a very potent opioid that's been a growing problem in the area could be to blame. Police used Narcan nasal spray twice to save three of the overdose patients overnight. They said the other patient was able to recover without Narcan. All three were transported to area hospitals.

The first overdose involved a woman in the bathroom of the Man Cave in Springfield. The second was a man in the Springfield Target bathroom, and the third was at a private residence in Springfield and was also a man.