Taylor Swift's alleged stalker threatened to kill her entire family, it has been claimed.

Prosecutors have discovered a batch of emails said to have been sent by Frank Andrew Hoover - who was ordered to stay away from the 'Shake It Off' singer in 2006 - to the 28-year-old pop star's father between May 2015 and October 2016, which contained a number of sinister threats.

According to a 122-page indictment obtained by TMZ, one email read: ''Decided that we are going to end all the Swifts on one day because I can't stand that virus s**t your daughter spread.''

Another said: ''The evil family of devils: Scott, Austin, Taylor, Andrew. Sincerely, the end real son of god'', while a third read: ''This article is not a joke and is why god is going to burn them into the desert for me.''

A fourth note simply read: ''Go to hell, Swift.''

According to the documents, Hoover also allegedly told Scott: ''Enjoy the brain aneurysms and death.''

Hoover now faces new charges for stalking and repeatedly violating a restraining order.

He was previously arrested for violating an order by allegedly following the 'Gorgeous' singer in Texas in October 2016.

On that occasion, Hoover was taken into custody after following Taylor's motorcade from the Formula 1 racetrack in Austin, Texas, to the airport after her concert there.

At the time, it was reported he had got within 25 to 50 feet of the 'Bad Blood' hitmaker's car - even though she has a protective order against him which states that he must stay 500 feet away from her at all times - and told her security team he wanted a picture and to ''possibly accompany Taylor wherever she goes''.