Traffic in Portsmouth was stopped to allow four white vans with flashing blue lights to be escorted through the city - and police will not say why.
The convoy passed southbound through Copnor Road just before 10am.
It was also spotted in Drayton at about 11.30am.
The News asked Hampshire police for details.
A police spokeswoman confirmed it was a police escort but said she could not reveal what was being escorted,
‘It was a police escort but we were not party to the reason - according to the Roads Policing Unit Inspector,’ she said.