<p>"US Airways Flight 457 from John F Kennedy International Airport to Phoenix Sky Harbor International Airport diverted to Lambert - St Louis International Airport at the request of the flight crew, due to suspicious behaviour exhibited by three passengers," the TSA said in a statement.<br /><br />The plane was swept and cleared for flight, it added.<br /><br />The incident comes a couple of days after F-16 fighter jets were scrambled to escort two US flights after their crew were unnerved by two of its passengers spending a long time in the plane's lavatory on September 11.<br /><br />The planes landed without incident in Detroit and New York and the six passengers who exhibited "suspicious behaviour" were released without charge after being questioned.</p>
<p>"US Airways Flight 457 from John F Kennedy International Airport to Phoenix Sky Harbor International Airport diverted to Lambert - St Louis International Airport at the request of the flight crew, due to suspicious behaviour exhibited by three passengers," the TSA said in a statement.<br /><br />The plane was swept and cleared for flight, it added.<br /><br />The incident comes a couple of days after F-16 fighter jets were scrambled to escort two US flights after their crew were unnerved by two of its passengers spending a long time in the plane's lavatory on September 11.<br /><br />The planes landed without incident in Detroit and New York and the six passengers who exhibited "suspicious behaviour" were released without charge after being questioned.</p>