London: Anthony Joshua will make the first defence of his IBF heavyweight title on June 25 in London.

The British fighter says his challenger will be announced at a later date.

Joshua knocked out Charles Martin in the second round earlier this month at London’s O2 Arena to claim the title from the American. Joshua will return to the same venue for the defence.

Joshua, the super heavyweight gold medalist from the 2012 London Olympics, says “I can’t wait to be back and I’m looking forward to performing once again.”

Joshua’s promoter was originally planning to stage the first defence at Wembley Stadium on July 9, the same night as the rematch between WBA and WBO heavyweight champion Tyson Fury and Wladimir Klitschko.