Things got very heated when IBF, IBO, WBA, WBO heavyweight champion Anthony Joshua came face to face with undefeated challenger Jarrell Miller at a press conference on Tuesday in New York City.

Joshua will defend his belts against Miller on June 1 at Madison Square Garden in New York City.

The two boxers squared up at the presser, which led to Miller shoving the champion with force.

They had a similar confrontation back in July 2018, when Miller confronted Joshua at a DAZN press conference, also in New York City.

Joshua's bout with Miller came together after a planned April event fell part. Joshua had planned to fight on April 13 at Wembley Stadium in London, but he was unable to secure several possible opponents - like Dillian Whyte, Tyson Fury and Deontay Wilder.

Joshua has no fear of Miller's punching power and doubts that challenger, despite his size, is really a legit big hitter.

“I am going to knock him the f*** out. He is a drug abuser. He’s a kickboxer. I am going to knock him out. (Miller screams about Anthony’s mother.) Where’s your mother? I am paying her rent with this. She will come here and watch a real champion fight," Joshua said.

“Jarrell Miller is a little b*tch. I am going to throw this jab down his throat. For a guy that is 300 pounds, he punches like a fairy. June 1st - this is going to be a show. Come out and watch this one New York. I am not up here playing the gangster role.

"I really knock people out, look at his little hands. This is the first time he will sell out a show and it’s because of me. Of course he spends all day thinking about me and watching my fights, he has to – but it still won’t be good enough.”