Probe into mystery call to captain of doomed jet: Unknown woman used a fake
ID when buying phone to bypass security checks
Call was made to Captain Shah just hours before he took off in MH370
Pay-as-you-go phone which made the call was bought with fake ID
Fake ID was used to get around security measures put in place after 9/11
Increases fears Captain Shah may have links to terrorism
Investigators will soon question the captain's estranged wife in detail
