A man has been arrested after a bomb was posted to a home in north London.
Counter-terrorism police detained the man, in his 20s, in Cambridge on Saturday morning.
He was arrested on suspicion of attempting to cause an explosion, or making or keeping explosives with intent to endanger life or property, the Metropolitan Police said.
Armed officers from Cambridgeshire Constabulary's armed response unit were deployed during the arrest "as a precautionary measure".
The man is in custody in south London and officers are searching two homes in Cambridge, the Met added.
In a statement, the force said: "The arrest relates to a suspicious package received via post at a residential address in north London.
Additional reporting by Press Association
