In the 1972 Summer Olympics in Munich, Peters competing for Great Britain and Northern Ireland won the gold medal in the women's pentathlon. She had finished 4th in 1964 and 9th in 1968. To win the gold medal, she narrowly beat the local favourite, West Germany's Heide Rosendahl, by 10 points, setting a world record score. After her victory, death threats were phoned into the BBC: "Mary Peters is a Protestant and has won a medal for Britain. An attempt will be made on her life and it will be blamed on the IRA ... Her home will be going up in the near future." But Peters insisted she would return home to Belfast. She was greeted by fans and a band at the airport and paraded through the city streets, but was not allowed back in her flat for three months. Turning down jobs in the US and Australia, where her father lived, she insisted on remaining in Northern Ireland.