Anti-terror police evacuated an address in Devon after finding "an item they deemed suspicious".
Metropolitan Police officers said the item, found at Tudor Road, Newton Abbot, is related to a suspicious device found at North Greenwich tube station on Thursday (21 October).
A 200 metre cordon around the address in Tudor Road has now been lifted, after police confirmed the item found at the property is "not viable."
Local residents were evacuated from nearby properties, but have since been allowed to return to their homes, Sky News reports.
In a statement, Devon and Cornwall Police said: "Further forensic searches will continue at the property in question. A police scene guard will remain in place whilst this work continues."
A 19-year-old man was Tasered during an armed operation on Holloway Road, north London after a suspicious device was found at North Greenwich station on an eastbound Jubilee Line train.
It was handed to the Tube driver who treated it as a suspicious stating that it contained "wires and possibly a clock", BBC News reports.
The station was evacuated and remained closed for several hours as the device was destroyed in a controlled explosion.
The suspect has been held on terror charges as authorities ruled out the possibility the device was a hoax.
Security has been stepped up around the transport network following Thursday's events.
The current threat level for international terrorism in the UK is severe - meaning an attack is deemed to be "highly likely".