At around 2pm SussexWorld received pictures of the helicopters over the seaside city.
The Ministry of Defence has been contacted for more information.
5. Military Chinooks spotted over Brighton
Military Chinooks spotted over Brighton Photo: Eddie Mitchell
6. Military Chinooks spotted over Brighton
Military Chinooks spotted over Brighton Photo: Eddie Mitchell
7. Military Chinooks spotted over Brighton
Military Chinooks spotted over Brighton Photo: Eddie Mitchell
8. Military Chinooks spotted over Brighton
Military Chinooks spotted over Brighton Photo: Eddie Mitchell
2 / 2