By James Gant For Mailonline
Published: 15:49 BST, 1 September 2019 | Updated: 15:50 BST, 1 September 2019
A man from the Middlesbrough area has been arrested on suspicion of an offence under the Terrorism Act and four properties have been searched, police said.
The 21-year-old was held in north London on Saturday in a pre-planned operation led by Counter Terrorism North East and Cleveland Police.
One address on North London, two in Middlesbrough and one in Teesville, near Middlesbrough, have been searched.
The search at one Middlesbrough address and the Teesville property are continuing, and after some potentially suspicious items were found at the latter, explosive ordnance disposal experts