Meghan Markle's future sister-in-law has been arrested on suspicion of assault once again and spent yet another night behind bars.

Darlene Blount, 37, the fiancee of Thomas Markle Jr, was arrested in Grants Pass, Oregon, on Friday on a charge of assault in the fourth degree.

She was bailed on Saturday, a deputy at Josephine County Jail told DailyMail.com.

Few details are known about the incident, but a source told DailyMail.com: 'Last night there was a domestic violence call at the home of Thomas Markle [Jr] and Darlene Blount. Darlene was arrested on assault charges.'

Arrested: Darlene Blount, 37, the fiancee of Thomas Markle Jr, was arrested. She is seen in her mugshot

It comes just months after a violent and boozy bust up with the Duchess of Sussex's half-brother Thomas Markle Jr. Thomas Jr and Blount are pictured together above

It comes just months after a violent and boozy bust up with the Duchess of Sussex's half-brother.

Police were called to the home of Thomas Jr and his fiancee on New Year's Eve.

On that occasion she told the the 911 operator, the 51-year-old was being 'really f***ing weird' and was beating himself up.

Blount said Thomas had been drinking when he became jealous, thinking she was trying to 'f*** some dude' she knew when out at a local bar.

The then 36-year-old claimed to be 'scared' of Thomas because he is 'a big guy', suggesting to the operator that he could be mentally ill.

Darlene Blount is the future sister-in-law of the Duchess of Sussex, as she is engaged to Meghan's half-brother Thomas Markle Jr

But when police arrived at the couple's home in Grants Pass, Oregon, they didn't buy Blount's story that Thomas hurt himself and arrested her for assault.

Thomas' bride-to-be was locked up in the Josephine County Jail for two nights until the District Attorney decided not to press charges and released her.

The couple later labeled the incident a wake-up call and said they were seeking relationship and alcohol counseling.

And previously in January 2016, Thomas Jr was arrested for allegedly holding a gun to Blount's head during another drunken row.