Jake Paul is at a significant disadvantage against two-time heavyweight champion Anthony Joshua

Anthony Joshua doubled down on his controversial "kill" comments to Jake Paul after being challenged on the comments at a news conference in Miami on Wednesday.

The remarks were first made on Tuesday when Joshua was asked whether he would hold back against Paul, with Joshua saying "if I can kill you, I'll kill".

Saturday's fight against YouTuber-turned-boxer Paul has attracted criticism over safety concerns and the size difference between the fighters.

And former world heavyweight champion Tyson Fury called Joshua a "classless loser" for the "kill" comments.