He was arrested under Section 41 of the Terrorism Act 2000 following a search of a property in the Londonderry area.
He was also arrested in relation to a hoax security alert last month on Lone Moor Road in Derry/Londonderry where a suspicious object was found in the middle of the road, close to Celtic Court which caused significant disruption for local residents and football fans arriving for the Derry City v Shamrock Rovers game.
The man has been taken to Musgrave Serious Crime Suite where he is being questioned by detectives.
More from Met Police
- Tragedy struck early today in Peckham as a stabbing left one man dead and two fighting for their lives
- Kanye West’s UK Entry ‘Under Ministerial Review’ Amid Wireless Festival Fury
- Chaos Hits Wireless Festival as Kanye West to Headline All Three Nights
- Pepsi Pulls Out of Wireless Festival Over Kanye West Backlash
- Three Charged Over North London Ambulance Arson Attack
- Five Met Officers Suspended After Firearms Left Bag Found in South London