Border Force officers at Heathrow seized material contaminated with uranium.
Terror police are investigating after a small amount of uranium that has been detected in a package at Heathrow airport following a routine screening.
A small amount of uranium has been detected in a package that arrived in the UK at London Heathrow airport following a routine screening.
The Metropolitan Police said its counter-terrorism command unit was contacted by Border Force colleagues at the airport after the contaminated material was discovered on 29 December.