NT teen caught in citizens arrest

A vigilant citizen has marched a teenager to police after a construction site in Darwin was vandalised.

The witness found the teenager hiding in scrub near the site after a group of five vandalised the building site and office - including vehicles, locks, a television and kitchen equipment - on Sunday afternoon, police say.

Another teenager was later arrested and both will appear in court at a later date charged with unlawful entry and criminal damage.