A historic grenade discovered by the train tracks near Turnham Green station on Tuesday (October 24) caused the surrounding area to be shut down by police while they dealt with the incident.
The Metropolitan Police were called to Thornton Avenue, Chiswick at 11.58am to reports that World War II ordnance had been found nearby.
Turnham Green station was evacuated, along with some nearby roads and buildings, as the ordnance was safely removed and roads reopened as normal at around 1pm.
A Metropolitan Police spokesman said: "A suspected World War II ordnance was removed from near Thornton Avenue.
"It has been taken away to be disposed of safely.
"Further tests will confirm whether it was a World War II ordnance as we believed it to be."
British Transport Police tweeted a picture of the grenade found by the tracks at 1.40pm.
BTP apologised for the delays that removing the ordnance had caused to Piccadilly and District Line commuters.
A BTP spokesman said: "A grenade was found by the tracks parallel to Thornton Avenue today.
"This is being treated as a Metropolitan Police incident. It is not clear when the ordnance was from, just that it is very old."
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