Two teenagers in the UK have been arrested on suspicion of a terrorism offence, the British Police have said.
The arrests are a part of an investigation involving the North West Counter Terrorism Unit, Greater Manchester Police and Lancashire Constabulary, the police added.
The suspects are 16-year-old girl and 14-year old boy from Manchester. It is not clear whether there is a family connection between them.
The girl was arrested “on suspicion of engaging in conduct in preparation for acts of terrorism."
The boy was suspected of "preparing for an act of terrorism under Section 5 of the Terrorism Act 2006."
Officers from the North West Counter-Terrorism Unit arrested the girl at her home in Manchester on Friday.
However, it is not clear where or when the boy was arrested.
They have been questioned and bailed until 28 May. The two haven't been named for legal reasons.
Police stressed that the arrests are not related to their investigation into why nine people from Rochdale (Greater Manchester) including four children, went to the Turkish-Syria border last week.
Anti-terror operations in the UK have intensified recently against the backdrop of an increasing number of young British Muslim men and women trying to travel to Turkey, allegedly to enter Syria to join the Islamic State militant group.