Chicago prosecutors are exploring whether to charge Juice Wrld's friends with felony murder charges, MTO News has learned. Under "felony" murder, a person is guilty if he's committing a crime and someone dies during the commission.

According to social media chatter - the Chicago prosecutors are exploring whether to charge Juice Wrld's friends with his death under this doctrine.

According to an anonymous tweeter with clear ties to the Chicago prosecutor, "Juice Wrld's team were smuggling drugs, and he tried to hide the evidence and died. It's straight forward felony murder."

On the plane, police found 41 “vacuum-sealed” bags of marijuana, six bottles of prescription codeine cough syrup, two 9 mm pistols, a .40-caliber pistol, a high-capacity ammunition magazine and metal-piercing bullets, according to the sources. Two men identified by police as working security for Juice Wrld were charged with the contraband.

And when Juice Wrld thought they would get caught, he tried to swallow evidence of the drugs. Look:

Law enforcement sources tell TMZ ... the pilot who was flying Juice's private plane alerted authorities on the ground that the rapper's entourage had guns on them -- a big no-no in air travel. When they landed, FBI and FAA agents were waiting for Juice and company.

We're told at some point between the plane landing and the feds conducting their search ... Juice was seen swallowing several Percocet pills in what people believed was an attempt to hide them. Our sources say the pills might've contributed to his death in a possible OD.