The sister of LA Chargers linebacker Tre'Von Johnson was arrested back in March after cops say she choked the NFL player in a fight over laundry ... TMZ Sports has learned.
According to police documents, Tre'Von and his sister, Tkeyah Johnson, got into a scrap when she wanted to wash her clothes at Tre'Von's Denton County, Texas home ... but he prevented her.
Cops say Tkeyah grabbed Tre'Von by his neck in a rage over not being allowed access to the washing machine ... and when he had trouble breathing -- he pushed her, causing her to fall to the floor.