A man who reportedly committed a sexual act on a farm animal is being hunted by police.

Officers were called to Denham Way in Maple Cross just after 7am on Saturday morning to reports of a man carrying out the explicit act on a cow.

Officers on the ground, aided by a police helicopter, carried out a search of the area but no-one was located.

The offender is described as an Asian man, aged in his mid-20s, around 6ft tall and of slim build.

He has black short hair and was wearing a shell type jacket, which looked old, in a faded green colour, and dark coloured trousers.

Enquiries are ongoing and anyone with information is asked to contact Hertfordshire Constabulary on the non-emergency 101 number, quoting crime reference C2/17/1357.