A boy aged 14 and a girl of 16 have been arrested on suspicion of preparing acts for terrorism.

The boy was held in Blackburn, Lancashire, after police examined a number of electronic devices and raided a house in the town on Thursday.

The girl was arrested after police raided a house in Longsight, Manchester, on Friday as part of the same investigation.

Both youngsters were arrested on suspicion of terror-linked offences and bailed until May 28.

The investigation involves the North West Counter Terrorism Unit, Greater Manchester Police (GMP) and Lancashire Constabulary.

Police said on Thursday the examination of what they described as a "number of electronic devices" led them to execute the search warrant at the house in Blackburn.

The 14-year-old boy was arrested on suspicion of preparing for an act of terrorism under Section 5 of the Terrorism Act 2006.

The day after officers from GMP's Tactical Aid Unit and North West Counter Terrorism Unit executed a warrant at a house on Clee Avenue, Longsight, in south Manchester.

The 16-year-old girl was arrested on suspicion of engaging in conduct in preparation for acts of terrorism.

The arrests come as nine individuals from Rochdale, Greater Manchester, are being held in Turkey after allegedly trying to cross the border into war-torn Syria.

It is not believed the arrests in the UK are linked to events in Turkey.

Residents on Clee Avenue said they had not seen any noticeable police activity in the street, a cul-del-sac of terraced houses on a large council estate in Longsight.