Convicted terrorist Thedore 'Ted' Kaczynski, who launched a string of deadly bomb attacks across America, is fighting to stop his diaries being auctioned off.

Kaczynski is nearing the end of a five-year battle with U.S. authorities over the sale of his personal possessions, which also include tools, typewriters and clothing.

Proceeds from the auction would go to four surviving victims of the attacks who are owed $15m in restitution by Kaczynski.