Amy Winehouse's husband, Blake Fielder-Civil, has reportedly written a “vile and abusive” letter to the singer's father, Mitch.

The six-page letter is said to depict Mr Winehouse as the victim in a horror movie. It has since been handed to police and solicitors.

A friend of Winehouse's father told the Sun newspaper that he was left “physically shaking” by Fielder-Civil's letter, apparently sent from his prison cell.

“Part of Mitch wants to pursue this further with the police, maybe even taking out a restraining order,” the friend added.

“But then he is worried about it all driving a wedge between him and Amy.”

Fielder-Civil is currently serving a 27-month jail sentence after pleading guilty to assault and perverting the course of justice.

(by Jason Gregory)