Police say they have `` grave fears '' for the missing . The search is being led by a team of police and volunteers from across Britain who are working in tandem with local people to find out what happened to the boys. Authorities said more than 200 people are missing .
Police say they have `` grave fears '' for the missing . Rescuers continue house-to-house searches in Christchurch . Authorities said more than 200 people are missing .