Virgin Atlantic has confirmed that passengers on flight from Dubai to London's Heathrow Airport were asked to disembark for additional security checks just hours after a deadly terrorist attack in the city of Manchester.

"Our customers travelling on the VS401 from Dubai to London Heathrow have temporarily disembarked the aircraft for additional security checks," the carrier told TheStreet in an emailed statement. "This is purely as a precautionary measure as the safety of our customers and crew is our number one priority and we're planning to have everyone on their way as quickly as possible."

The news followed a report that Victoria Coach Station, a busy bus terminal in central London, had been temporarily closed as police inspected a suspect package. 

London, and indeed the whole of the United Kingdom, remains on high alert after last night's terrorist atrocity in Manchester which left 22 people -- including possibly many children -- dead and 60 others wounded after a suicide bomber detonated what may have been a homemade nail bomb at the conclusion of an Ariana Grande concert in Manchester Arena.

Police say the attacker died at the scene of the incident, which took place around 10:33 BST Monday at the end of a pop concert in central Manchester, about 160 miles north west of London. The attacker used a self-detonating explosive in the 21,000-seat capacity arena, police said, and noted that inquiries at this stage are focused on whether he acted alone or with the assistance of others.

"We have been treading this as a terrorist incident and we believe, at this stage, the attack was conducted by one man," Greater Manchester Police Chief Constable Ian Hopkins said in a statement. "The priority is to establish whether he was acting along or part of a network."

"We would ask people not to speculate on his details or share names," Hopkins said. "There is a complex and wide-ranging investigation underway. Our priority is to work with the National Counter Terrorist Policing Network and UK intelligence services to establish more details about the individual who carried out this attack."

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