The New York Post said prosecutors want to swab the recording artist's cheeks and have the sample tested to see if his DNA matches what investigators found on a loaded, unlicensed handgun seized from Ja Rule's car in Manhattan last year.

Prosecutors hope the test will tie the rapper or one of his co-defendants -- driver Mohamed Gamal and passenger Dennis Cherry -- to the weapon, the report said.

The three men, who are opposing the DNA test, pleaded not guilty in Manhattan Supreme Court Wednesday.