Investigations have been continuing today into how a number of wolves managed to escape from Colchester Zoo.
The incident took place yesterday morning and resulted in three of the five wolves being shot dead. One returned of its own accord; the other was tranquillised. They had got out though a damaged fence.
So, what can zoos do, to make sure they are as secure as possible?
Click below to see Malcolm Robertson's full report:
More top news
Thousands of people turned out to party in Luton as the town staged its 40th carnival.
Increasingly murky overnight. Dull start Monday, but sun breaking out later in places
A soldier from Essex is celebrating after becoming the first magician to win Britain's Got Talent.