Grammy-winning musician Lil Nas X pleaded not guilty on Monday to four felony charges after police say he assaulted officers who approached the singer while he was found wandering the streets of Los Angeles in his underwear.

Lil Nas X is facing four felony charges after allegedly assaulting police officers who confronted him for roaming the streets of L.A. while naked.

Lil Nas X has been charged with three felony counts of battery with injury on a police officer and one felony count of resisting arrest after he was arrested last week on Ventura Boulevard in Studio City.