Follow the latest developments on the New Zealand quake here
(CNN) -- A man trapped on the 12th story of a Christchurch building on Tuesday told how aftershocks rumbled through the damaged building, rattling the nerves of the 19 other co-workers trapped on the same floor.
"Every aftershock sends us scrambling, it doesn't take much to set us off," Gary Moore told CNN by phone from the 17-story Forsyth Barr Hotel in Christchurch where a deadly 6.3-magnitude earthquake ripped through the city at lunchtime leaving at least 65 people dead.
"Both the stairwells have collapsed and we are just looking into a void," Gary Moore told CNN as he remained trapped in the 17-story building. "We're fine but we are badly shaken. We're just playing the waiting game and letting loved ones know we're okay.
"We watched from the building as our cathedral collapsed and a five-story building. We've got 10 people here from out office and another 10 people from an adjoining office.
"Someone has written on the pavement that help is on its way. We're doing our best to jolly people along," he said. "The language was a bit rich when it first hit."
