A man has been arrested in Leeds over the fatal shooting of a 12-year-old boy in the Netherlands.
Danny Gubbels was killed in a caravan in Breda on 14 July last year.
West Yorkshire Police said they arrested the 29-year-old on behalf of the Dutch authorities and his extradition has been requested.
The man was remanded in custody by Westminster Magistrates' Court in London on Wednesday, the Serious Organised Crime Agency confirmed.
Another British man, aged 24, has been arrested in Amsterdam over the death, police said.