LONDON (AP) — British police say they have arrested four people and searched properties across England in an investigation of suspected terrorism in Syria.
Two British men, ages 22 and 29, were arrested Monday as they arrived at the port of Dover from France, on suspicion of involvement in "the commission, preparation or instigation of acts of terrorism." Police also seized ammunition.
London's Metropolitan Police said another man, 27, and a 26-year-old woman were arrested in Essex, east of London, on Wednesday as part of the same investigation.
All four were being held at a London police station Thursday.
Police say officers have searched addresses in Essex, London and northwest England as part of the investigation. They gave no other details.
The government has expressed concerns about Britons going to Syria to join anti-government rebels.