Robyn Mercer murder: 'Crucial' item found in antiques dealer inquiry
Divers searching a Surrey lake have found an item which "could prove significant" to police investigating the murder of an antiques dealer.
Robyn Mercer, 50, was bludgeoned to death with either an axe or a machete in West Molesey on 14 March.
The mother-of-two was found at the end of her driveway in Walton Road. Five people arrested in connection with her death are on bail.
A search of Littleheath Pond in Oxshott began on Tuesday.
A post-mortem examination revealed Ms Mercer had been hit once to the front of the head and then struck several times while on the ground.
The item was found on the bed of the lake on Wednesday by a diver from Specialist Group International (SGI), which has been working with police.
Other items of "potential interest" have also been found, Surrey Police said.
The search of the water has been extended and divers are expected to remain at the location for at least another day.
Det Ins Paddy Mayers said: "The items recovered are all potentially significant but clearly one of the recovered items may be crucial to the investigation.
"There remains a sizeable section of the pond still to be searched.
"Officers continue to work relentlessly to bring those responsible for Robyn's horrific murder to justice."