substantial lead over the other, rather. 27 minutes before the top of the hour. now this. >> one of bin laden's sons is reportedly calling on iran and release a number of his relatives said to be held there. khalid bin laden reportedly issued a letter to the supreme leader of iran and says some of his brothers and sisters fled to iran after the bombing in afghanistan. now he wants them freed. it's not known where the message was sent from. >> meanwhile, a deadly avalanche that killed two people was apparently caused by a snowmobile stunt. it happened at a snowmobile rally at boulder mountain in canada. witnesses say three daredevils raced each other up a slope triggering the avalanche. 200 people were buried. at least 30 were hurt. >> the guy behind me maybe 20 feet. we dug him out right away and he was dead and i had coffee with him -- not coffee with him but he was buying coffee that same morning. so i did talk to the guy. >> that's awful! an avalanche warning had been