POLICE said yesterday they were still following up calls made after a TV appeal by the mother of murdered shop worker Jenny Nicholl.

It is now a week since Ann Nicholl appeared on Crimewatch alongside Detective Inspector Pete Martin, the officer leading the investigation. She made an emotional plea for information about Jenny, who was 19 when she disappeared.

Yesterday, a spokesman for North Yorkshire Police said: "We are still following through some of the calls received.

"We are still concentrating on finding out who was with Jenny in the days before she disappeared. That is what we are dealing with at the moment."

Calls were made to both the BBC studio and the incident room in her home town of Richmond.

The search for Jenny moved away from the immediate area around Richmond yesterday.

Search teams from the county's police force spent the day at Sweethill Plantation, off Range Road, between Catterick Garrison and Leyburn.

Jenny has not been seen since she left the family home at Bolton Avenue, Richmond, on June 30.

Police believe she has been murdered, after announcing they had found nothing to indicate that she was still alive.