Olympic silver medal winner Joe Joyce has warned heavyweight contender Jarrell Miller that angering Anthony Joshua may have been a mistake.

On Tuesday in New York City, Joshua and Miller came face to face at their kickoff press conference and tempers erupted several times. Miller shoved Joshua during their stare down, and the two boxers engaged each other with profane insults being hurled from every corner.

Miller will challenge Joshua for the WBO, WBA, IBF, IBO heavyweight titles on June 1 at Madison Square Garden in New York City.

Joshua and Joyce are very good friends from their amateur days.

Joyce was not surprised with Joshua's verbal bombs that were aimed at Miller.

"[The press conference] got a bit tasty. It's in [Joshua], he used to be a bouncer and a bit of a street kid so he has that side to him and it just came out. Being angry makes him even more dangerous, especially when he starts swinging those big arms around, but it has got people talking about his New York debut, it is going to be a good fight," Joyce told Daily Mail. 

"His image has been polished but this has got people talking and the US boxing fans will be out in force. I never really saw the street-kid side to him when he were in training, he was usually always laughing and joking, he is a cool guy. but if you push the wrong with him or he hasn't eaten and is a bit hungry then maybe he gets like that. Don't we all."

Joyce takes his next step this Saturday night, when he faces former world champion Bermane Stiverne at The O2 in London. The contest will be carried in the United States by Showtime, and on pay-per-view in the UK by ITV Box Office.