prior to his work with sveriges radio, horner worked for borås tidning and svenska dagbladet in the 1980s. from there, he moved to the united states and united kingdom in the 1990s where he worked as a freelance writer before ultimately joining sveriges in 2001. during his career, he covered stories including the decline of the taliban, the 2004 indian ocean earthquake and tsunami, and the fukushima disaster. horner served as the south asia correspondent for sveriges radio at the time of his death.