United flight to Spain turns back midair after possible security threat

Security came to inspect aircraft in Newark after report of Bluetooth device with a certain four-letter word'

A United Airlines plane bound for Spain from Newark Liberty international airport turned around mid-flight on Saturday due to a possible security threat.

That came one day after another United Airlines flight bound for Minneapolis from Chicago was diverted to Madison, Wisconsin, on Friday because an unruly passenger evidently tried to breach the cockpit.