Gladys Hammond's body was dug up five weeks ago

The body of Gladys Hammond was dug up at St. Peter's Church in Yoxall, Staffordshire, five weeks ago.

Her son-in-law breeds guinea pigs for medical research and detectives believe animal activists may be to blame.

Two men from Coventry and Wolverhampton were arrested last month and are on police bail pending further enquiries.

'Prioritised for action'

Det Insp Dave Mellor, from Staffordshire Police, said there was a number of encouraging and positive lines being followed by officers.

"Detectives have gathered and received a wide range of information and intelligence which has either already been acted upon or is currently being analysed and prioritised for action," he said.

"We are in daily contact with the family who, although still deeply anguished, are reassured and confident in the progress of the enquiry.

"Our two top objectives are still to find and safely return Gladys Hammond's remains to her family and to catch and convict the offenders who committed this sick and depraved crime."

Mrs Hammond's son-in-law Chris Hall is one of two brothers who breed guinea pigs at Darley Oaks Farm, Newchurch, Staffordshire.

The family have been targeted by animal rights protesters over a period of about five years.

The burial plot of Mrs Hammond, who was laid to rest seven years ago, was disturbed on 7 October.

Her remains have still not been recovered.