Two people who were arrested after "potentially explosive" chemicals were found at a house in Keighley by Counter Terrorism Officers have now been released on bail pending further enquiries.
A 48-year-old man and 29-year-old woman had been arrested at the property in Parkwood Street, Keighley on Sunday.
"Potentially explosive material has been discovered during searches at the address," a North East Counter Terrorism Unit spokeswoman said.
Neighbouring homes were evacuated "as a precautionary measure" whilst an Army bomb disposal unit removed the "potentially dangerous material"
Residents have since returned to their homes, but searches continue at the scene.
A spokeswoman said "We recognise that local people may have concerns as a result of this activity and would like to reassure them that the arrests are intelligence led and not in response to any immediate threat."
"Due to the nature of the materials recovered, the North East CTU is leading the investigation. However, this is not being treated as a CT incident at this time.
Residents will be kept as informed as possible and we are grateful for their understanding, patience and support while the searches are concluded."
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