South Australian prisoner goes missing while on external work program

An Adelaide prisoner has gone missing during an external work program at a distribution centre.

Tara Kehoe, aged in her 40s, was unaccounted for just after 1pm today at the centre near Fosters Road in Northfield.

Police say she is part of the pre-release centre at the Adelaide Women's Prison and are asking anyone who may have seen her to contact them.

She is described as being 170cm tall, around 65kg with long, straight brown hair.

She is wearing a long-sleeved t-shirt.

Police have warned the public not to approach her.

Anyone who sees Tara Kehoe should contact police on 131 444.