Prince Harry urged tech companies to be more transparent about issues involving children as he and his wife, the former Meghan Markle, made their first public appearance on Tuesday since her father's arrest on suspicion of possessing images of child abuse.

Harry spoke at the European Parliament in Brussels during the opening of a memorial to children who have died as the result of harm suffered on social media. The Lost Screen Memorial features replicas of oversized smartphones with the photo of a deceased child on each home screen.