(CNN) Rapper and singer Juice WRLD has died in Chicago, the Cook County Medical Examiner's Office said Sunday.

Juice, who was born Jarad Anthony Higgins, turned 21 on December 2.

The rapper suffered a medical emergency shortly after arriving at Chicago's Midway International Airport, according to people who were traveling with him, Chicago police spokesman Anthony Guglielmi said in an email to CNN. The rapper died shortly after at a nearby hospital, according to police.

"There were no signs of foul play and all individuals aboard the aircraft are cooperating with CPD and have given all of their information," Guglielmi said.

Police are waiting for the medical examiner to determine cause and manner of death, he said.