Keepers at Colchester Zoo have warned people not to approach a runaway pig.

The red river hog has been missing for nearly a week from the collection at the Maldon Road site.

It is not known how the animal escaped, but it is thought it fled after it was disturbed by a trespasser or animal.

Red river hogs, which come from west and central Africa, are not thought to be dangerous but the zoo has asked people not to approach it.

The young female hog escaped last week and despite several sightings from members of the public, efforts to recapture it have so far been unsuccessful.