Four Iranian nationals are among those arrested as part of an investigation into a suspected plot to "target a specific premises".

Eight people have been arrested in connection with two separate terrorism investigations in 24 hours, police have said. London ’s Metropolitan Police said five people were arrested yesterday on suspicion of preparation of a terrorist act after detectives uncovered a suspected plot to ‘target a specific premises.’

British police on Sunday said they had arrested five men, including four Iranians, on suspicion of "preparation of a terrorist act".The arrests were carried out in London, Swindon and the Greater Manchester area,