China's Foreign Ministry on Monday urged Malaysia to step up search and investigation efforts over a missing Malaysia Airlines jetliner with 239 people on board.

Ministry spokesman Qin Gang made the comments at a daily news briefing.



Questions have mounted over possible security lapses and whether a bomb or hijacking could have brought down the Beijing-bound plane, after Interpol confirmed at least two passengers used stolen passports and said it was checking whether others aboard used false identity documents.

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