Update: the missing woman has been found
Police were searching a Watford business park today after a woman was reported missing.
Hertfordshire Constabulary received a report of a missing woman at 3pm. Officers were trying to locate the woman in the area around Croxley Green Business Park.
The police helicopter was deployed to assist with the extensive search shortly after 4pm.
Giles Cooper, a spokesman for the force, said: "At this moment we are concerned for the safety and welfare of the woman."