UNITED NEWS INTERNATIONAL (UNI) — Three people in Illinois have died after experiencing severe bleeding linked to the use of synthetic marijuana.

The Illinois Department of Health published a statement on April 9, saying two of the deaths were men in their 20s and the third was a man in his 40s.

Synthetic marijuana is a manmade drug, engineered to mimic the effects of natural marijuana.

However other substances, like rat poison, are being combined with the drug and it is proving fatal.

Since March 7, more than 100 users in Illinois have reported symptoms including uncontrollable bleeding from their eyes, nose and gums, as well as internal bleeding.

State health officials are urging locals not to use synthetic marijuana, also known as Spice, K2 or fake weed.

Meanwhile, three Chicago convenience store clerks were charged last week for allegedly selling the synthetic drug laced with rodent poison to undercover federal agents.

The suspects are awaiting court hearings.