Four men and one woman are due to appear at Glasgow Sheriff Court tomorrow charged with alleged terrorism offences and conspiracy to murder.
The arrests are linked to the "activities of individuals sympathetic to dissident Republicanism, but who are not affiliated to any specific group", Police Scotland said.
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A Red Arrows aircraft has crashed at RAF Valley, it is understood there were two people on board the jet.
Peter Pickering - who became known as the Beast of Wombwell - has been found guilty of abducting and raping a woman forty-six years ago.