The Metropolitan Police have welcomed the new Portuguese investigation, but warned that there was still "a way to go."
This is a welcome development, but both sides of the investigation are at relatively early stages, with much work remaining to be done. This new momentum is encouraging, but we still have a way to go, and as with all major investigations, not all lines of enquiry that look promising will yield results.
More top news
Showers in the north. Fine in the south
An 18-year-old Moroccan is in custody after two people were killed in a mass stabbing in Turku believed to have been a terror attack.
Jeremy Hunt has rejected Professor Stephen Hawking's claim that he "abused" scientific research to justify the creation of a seven-day NHS.