Black Widow spiders have been recovered from a business on Teesside.
They were discovered by employees at a company which does not want to be named.
It's thought that the highly poisonous North American spiders may have travelled to the UK in a freight shipment.
They were caught by wildlife expert Jack Fenwick from Guisborough-based Naturally Wild Consultants.
Mr Fenwick said that, while the Black Widow is highly venomous, fatalities from bites are rare.
More top news
Callum Young, who will now be 23, was last seen on August 27 last year at his home in Hylton Road.
Gunner Paul Ferguson was on leave from the Army when he died in the early hours of Sunday August 21.
Dutch International Darryl Janmaat left for Watford, USA's DeAndre Yedlin arrived from Spurs and Tim Krul left for a season's loan at Ajax.