The police helicopter was called out to the Crediton area this morning after reports of a man armed with a knife.
The alarm was raised in Bow by a member of the public at about ten to nine.
A police search was launched and a man was arrested about an hour later in a nearby field - he's been taken into police custody.
Devon teenager charged with murder
19-year-old Layton Randle to appear at court
Dramatic bedroom window rescue of flood-hit resident
Andy Matthews and his dog were evacuated from East Devon home
Storm damage to West Hoe Pier could cost extra £200,000
West Hoe Pier was hit "at most vulnerable" stage
Storm Chandra causes disruption across Devon
School closures and travel chaos across county
Devon demands government cash for storm repairs
Calls for more flood defence
Two arrested after body found in Plymouth waters
Teenagers questioned on suspicion of murder
