Lil Nas X 's father Robert Stafford said his Grammy-winning son was "in great spirits" and "doing great mentally" following his arrest Thursday after he was allegedly found walking the streets of L.A. wearing only underwear and cowboy boots.

Rapper Lil Nas X pleaded not guilty Monday to four felonies alleging he charged police last week after “strolling naked down Ventura Boulevard in Studio City,” the Los Angeles County District Attorney’s Office announced.

Grammy-nominated rapper Lil Nas X was charged Monday with four felonies stemming from a Friday morning incident where police say he charged at officers while walking naked down a Los Angeles street.