Chance Comanche -- the NBA G Leaguer arrested for his alleged role in the murder of a woman earlier this month -- confessed to cops that he strangled the female before burying her body in a Nevada desert ... this according to new court documents.
In the docs, Las Vegas Metropolitan Police Department investigators say through a series of interviews ... they learned that Comanche and his ex-girlfriend, 19-year-old Sakari Harnden, played a role in the disappearance of Marayna Rodgers -- and when they spoke to the basketball player about it all .