Military planes have been spotted landing in Liverpool John Lennon Airport ahead of the G7 forum this weekend.
A convoy of at least seven cars, including matrix vehicles and private security, was then seen leaving the Speke airport some time later.
Seven of the world's leading democratic nations will join together in the city for the international meeting.
READ MORE: Metal cages and road blocks in place as city hosts G7
During the G7, discussions on issues facing the world take place between US, France, Germany, Italy, Canada, Japan and the EU.
Every year a different country hosts the presidency of the G7.
This year has been the UK's turn to host and Liverpool is holding the final meeting of the year.
Previous forums included COP26 in Glasgow in November and the G7 Leaders’ Summit in Carbis Bay, Cornwall, in June.
Discussions at the event in Liverpool are thought to include the development of vaccines, the future of green, sustainable infrastructure, as well as preventing and resolving conflict.
It will take place from today to Sunday, December 12.
Security has been increased across the city, because of the forum, with metal fences being installed on Hope Street, the Pier Head and Liverpool ONE
Merseyside police also said there will be an high presence of their officers in the city centre.
Assistant Chief Constable Rob Carden said: "This is also a historic weekend for Liverpool, as we host Foreign Ministers and G7 countries for discussions.
"It’s great that our city will be in the global spotlight and, rest assured, extensive security checks have been carried out and a robust policing plan has been put in place to ensure that delegates can enjoy the conference and the city during their visit.
"The force will continue to provide and effective and professional policing service across Merseyside during the conference and we are working closely with our partners to make sure that disruption to city centre visitors and residents is kept to a minimum.
"Over this weekend, visitors can expect to see a highly visible policing presence in the city centre and I would encourage people to say hello to our officers, highlight any concerns and report any incidents."
