document: Scotland Yard said the 37-year-old was held at his home address under Section 41 of the Terrorism Act 2000.
  Officers from the Metropolitan Police are searching the property.
  He has been taken to a south London police station and is being questioned by officers from the counter terrorism command unit.
summary: A man has been arrested in north-west London on suspicion of involvement in production of improvised explosive devices in Iraq in 2007.