The Trap Queen star broke his left leg in three places when he collided with a vehicle while reportedly trying to overtake a car last month. Following the accident, he pulled out of a number of shows in Florida, Washington, D.C. and England to focus on his recovery, and now he has dropped out of performing at JAM'N 94.5's concert in Lowell, Massachusetts on 20 October (15) under doctor's orders.

"Hey Boston zoo, sorry I can't make it to the @jamn945 show on 10/20," he writes on "Doc says I can't travel that far yet. Hope to see you soon!!"

Two other upcoming concert appearances in Pennsylvania and Virginia remain on his tour schedule.