Chris Benoit’s father said Friday that he was eager to see whether chemical tests can help explain why Benoit killed his wife and son and committed suicide, acts that the wrestler’s father said he had no clue were coming. Michael Benoit said by phone from his home in Alberta, Canada, that his family is shocked and in disbelief over the slayings. “We have no understanding of why it happened,” he said. “We need some time to gather our thoughts and wait and see. There’s still more information that’s going to come out from toxicology tests that will give us some understanding of why this happened.” Michael Benoit, who lives near Edmonton in Ardrossan, said the test results, which could take several weeks to be completed, “could give us closure.” He said his son had seemed fine when they spoke on Father’s Day, and had even said he regretted having to work instead of spending the day with his family. “That really wouldn’t give you an indication of someone who would do what he did a week later,” the father said.