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.

Lil Nas X is facing four felony charges following his Thursday arrest, when he was allegedly spotted roaming the streets of Los Angeles in nothing but his underwear and cowboy boots.

The rapper, who was seen walking down Ventura Boulevard in his underwear and cowboy boots early Thursday morning, pleaded not guilty to all four charges.