Riley Keough has reportedly locked out her grandmother Priscilla Presley from the Graceland estate.

According to Radar Online, Riley "changed the locks on the upstairs doors and archives."

While neither of the duo has commented on the matter, it is presumed that their ongoing feud might have played a part.

The pair have been at odds since Elvis' ex-wife contested the will of her daughter Lisa Marie.

The will names Riley and her late brother Benjamin Keough as the co-trustees of the singer's estate.

Amid the drama, Lisa Marie's ex, Michael Lockwood, has asked a court to appoint him "guardian ad litem" over their daughters.

This will grant him the right to represent them in any hearing concerning the will.

Lisa Marie was allegedly at odds with her mother and ex before her death

Priscilla and Riley have only communicated via their lawyers since the former filed the petition to challenge the will.