A 27-year-old man has been arrested at Stansted Airport on suspicion of terror offences.
The suspect, who was allegedly in possession of false identity documents, was stopped this morning as he was trying to leave the UK, the Met Police said.
He was rearrested by counter-terrorism officers on suspicion of preparation for acts of terrorism and is currently in custody at a police station in central London.
Officers carried out a search at a house in north west London in connection with the incident.
Stansted Airport was at the centre of a security scare last night (July 31) after a "suspicious package" was found in a cargo facility.
Army bomb disposal experts were called in after the package, which was due to be loaded onto a plane, was detected on scanners by FedEx staff.
Staff had to be evacuated and cargo flights were suspended, but passenger flights weren't affected.
However, the incident was stood down shortly after midnight and Essex Police have confirmed this morning that the package contained nothing malicious.
"Police were called shortly before 8pm on Friday, July 31 following the discovery of a suspicious package at the FedEx cargo facility near Stansted Airport.
A cordon was put in place while enquiries were carried out. EOD attended, assessed the package and confirmed that it contained nothing of concern.
The incident was stood down and cordons removed shortly after midnight on Saturday, August 1."
Stansted has revealed the number of passengers using the airport has continued to grow.
More than 2 million passengers used the airport last month - up 11% on the same time last year.
The annual total has also grown by 16.5% from 18.4% to 21 and a half million.
The number of planes taking off from the airport also rose by over 11%.
Preparations are underway at Stansted Airport for Michelle Obama's departure today.
America's first lady has been in the UK campaigning for education for young women.
Her presidential plane has been at the airport ever sine she flew in two days ago.
America's first Lady, Michelle Obama, has flown into Stansted Airport this evening ahead of a two-day visit.
Mrs Obama was accompanied by her teenage daughters Malia and Sasha plus her mother Marian Robinson as she touched down shortly after 20:30.
She's in the country as part of her campaigning work for an organisation that promotes education for young women.
Stansted Airport has been revealed as the second biggest crime hot spot in England and Wales.Read the full story ›
Stansted Airport says it's facing a battle to recruit enough engineers and technicians and regularly has hundreds of vacancies to fill.
This afternoon it opened a a new £500,000 education centre to encourage more children to take up a career in the aviation industry.
Click below to watch Elodie Harper's report.
A new Dreamliner aircraft which will be used for long-haul flights out of Stansted Airport has touched down there for the first time.
The Essex airport is about to start flights to Orlando and Cancun using the new state of the art 787 Boeing plane.
Operated by Thomson Airways it's another new addition to the expanding airport and can fly further without stopping - at around 8,000 miles.
"I don't think anyone can be as excited as a pilot picking up a brand new aeroplane which is a world class aeroplane.
This is the epitome of aviation at the moment. The Boeing 787 is in a class of its own.
This is a world leading composite designed aeroplane that flies higher and faster - this is it, it doesn't get much better than this."
Click below to watch a report from ITV News Anglia's Hannah Pettifer
A teenager from Cambridge was among more than 100 Britons left stranded in earthquake-hit Nepal who arrived at Stansted Airport today.Read the full story ›
Customer service staff at Stansted Airport have been gearing up for one of their busiest periods of the year.
Around 280,000 people are expected to use the Essex terminal over the four day Easter period.
The aim of the customer service team is to get passengers from pavement to plane as quickly and efficiently as possible and to keep queues to a minimum.