01:28A Republican candidate for Colorado governor has refused to say how many people he has killed.Victor Marx was questioned by 9News anchor Kyle Clark on a previous claim he made that his stepfather forced him to kill a man at the age of 7.“Is that the only person you’ve ever killed?” Mr Clark asked, to which Mr Marx, a Marine veteran, fell silent for 10 seconds. “I would say, as a child, yes, without question, but I've been in other situations where, you know, possibly people - or persons - died as a result of me defending myself in other countries. There's no count on that. There's no photos,” he eventually replied.Grilled on whether he has killed people as an adult, he responded: “Does it matter?”Marx is competing against Colorado Sen. Barbara Kirkmeyer and Rep. Scott Bottoms in the GOP primary.Up next