rtokens: Holland was moved to a more secure centre earlier this year after a similar incident .
pos: NNS VBD DT JJ NN IN NNP IN PRP VBD IN DT JJ NN TO DT NN IN VBG DT JJ NN CC NN NN RB IN NNP .
tokens: Police launched a nationwide search on Thursday after he disappeared during an unsupervised trip to the toilet while visiting a popular zoo and theme park south of London .
ltokens: " A member of the public recognised Holland in a newsagent shop as he was reading the headlines about himself , " a police spokesman said .