London, July 3 (Reuters): London’s Heathrow airport reopened a busy international terminal today after a security scare led to the cancellation of around 55 flights.

Thousands of passengers were evacuated from Terminal 4 after a suspect bag was found shortly before midday (1100 GMT), the airport’s operator BAA, a unit of Spanish infrastructure and construction company Grupo Ferrovial, said.

The terminal reopened shortly after 5pm.