Authorities in San Diego announced a recent spike in drug overdose deaths from illicit narcotics, according to Fox 5 San Diego. Since Wednesday, there have been four overdose deaths, which authorities say is from M30 pills. The affected area includes Lakeside, Poway, Santee and Valley Center communities.

SD Sheriff’s Dept & SD Police giving an update on a dangerous substance known as M-30s or “blues” (Pictured)

4 fatal overdoses in the last 24 hours @fox5sandiego pic.twitter.com/4wDIbLeMPT — Kasia Gregorczyk (@KasiaGTV) July 26, 2019

The San Diego County Sheriff’s Department released a warning to the public saying the blue pills are being sold “with the promise of a painkiller high.” The pills responsible for the spike in deaths contain highly potent synthetic opioids like fentanyl. Fentanyl equivalent to four grains of salt is enough to kill the average adult. As the opioid epidemic weighs heavy on our country, we’re seeing it more and more.