British police say a 16-year-old girl has been arrested on suspicion of preparing terrorist acts.

Greater Manchester Police said Sunday the girl was arrested following a police raid at her Manchester home on Friday.

The girl has not been named and she has been freed on bail until a May 28 hearing.

Police say she was arrested "on suspicion of engaging in conduct in preparation for acts of terrorism" as part of an ongoing investigation.

The number of terrorism-related arrests in Britain has surged in recent months as an increasing number of Britons try to travel to Syria to link up with Islamic State group extremists there.

Earlier this week nine Britons were arrested in Turkey trying to enter Syria.