A source told 'Entertainment Tonight' that "unfortunately the Prince of Wales is no longer able to attend the King Constantine memorial service this morning due to a personal matter."
Princes Charles and William previously clashed together because of an argument over a royal family collection to the point that the former called his son 'naive' about the situation.
It seems like Prince Charles has been receiving the cold shoulder from Prince Harry after speculations about the royal's comments about his grandchild, Archie, started spreading.
One royal expert believes that Prince Harry's relationship with his father, Prince Charles, could still be saved before the Duke releases his awaited memoir in the coming year.
Speculations rise as rumors believed that Prince Harry begged for forgiveness to his father Prince Charles after news regarding Queen Elizabeth's health.