LOS ANGELES: Actor Liam Hemsworth has revealed he once hurled a kitchen knife at his older brother Chris Hemsworth. The "Hunger Games" star has admitted that the sibling rivalry between himself and Chris, 32, became so "vicious" on occasions, that he would turn to using weapons to defend himself, reports femalefirst.co.uk. Making an appearance on "The Graham Norton Show", the 26-year-old star -- who also has another older brother named Luke, 35 -- shared: "Our childhood rivalry was a bit vicious - a bit like 'The Hunger Games', actually". Liam admitted that on some occasions, their bickering became completely out of hand. "We had a few incidents with weapons. I never had any problems with Luke because he was so much older and I didn't mess with him. But with Chris, we were very like-minded, very stubborn and would often get into arguments and because I was so much younger and smaller I had to use weapons to fight," he said. Liam revealed he came perilously close to seriously injuring his older brother, who is best known for playing the Marvel superhero Thor. "So, one day when I was about five, we had a fight in the kitchen about using the toaster, or something, and I picked up a kitchen knife and threw it at his head and the handle hit him in the forehead," he said. Liam jokingly added that despite the near-miss, he was always in control of the situation.