A Marsden State High School student suspended for throwing a vegemite sandwich at the Prime Minister has confronted her on radio to protest his innocence.

Kyle Thomson phoned in to B105 radio station as Prime Minister Julia Gillard was trying to spruik the bipartisan agreement reached to sign DisabilityCare in Queensland.

‘‘I’d like to say I’m sorry that it’s come to this, all over the news and everything, but I’m innocent and I didn’t throw it,’’ he said.

Ms Gillard laughed it off, conceding she ‘‘sort of’’ sympathised but would not be using any parliamentary powers to appeal his three-week suspension.