With Malaysian police searching the homes of flight MH370's pilot and co-pilot, attention is growing on whether there was anything in the two mens' backgrounds that could explain the fate of the missing plane.  

While on the surface the pair appeared to be normal '" and according to most '" likeable, police are now scrutinising the psychological background of both pilots, their family lives and their connections for any possible link to extremists or any motive for involvement in the flight's disappearance.

When Prime Minister Najib Razak confirmed that Malaysian Airlines flight MH370 had been seized mid-air and re-routed from its path to the Indian Ocean, the finger of suspicion pointed straight at its passengers and crew.

Whoever had taken the fate of the 239 people on board in their hands had a sophisticated knowledge of aircraft systems '" they had disabled the radar and communications, and switched off its transponder, which signals its position to satellites. And in all probability no one on board had as much expertise as the pilot, Captain Zaharie Shah.

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