A 26-year-old man has been arrested on suspicion of the murder of three women in Hertfordshire, England earlier this week, Hertfordshire Police have said.
Kyle Clifford, 26, is suspected of carrying out the crossbow killings of Carol Hunt, 61, wife of BBC 5 Live racing commentator John Hunt, and two of their daughters, Hannah, 28, and Louise, 25.
He was found with injuries in Lavender Hill Cemetery in Enfield, north London, on Wednesday afternoon and taken to a major trauma centre for treatment.
Police have said he remains in a serious condition in hospital.
Detective Superintendent Rob Hall, from the Bedfordshire, Cambridgeshire and Hertfordshire Major Crime Unit, said: "Our thoughts remain with the victims' family at this tragic time.
"The investigation is moving at pace and as a result, we have now arrested a man. Enquiries are continuing at this time."
The killings shook the community near Watford, north of London, with a vigil held last night and condolences pouring in from locals and Mr Hunt's colleagues.
There is no licence required to own a crossbow in the UK, but it is illegal to carry one in public without a reasonable excuse.
A spokeswoman for the Home Office said legislation was "under constant review and a call for evidence was launched earlier this year to look at whether further controls on crossbows should be introduced".
She said the interior minister Yvette Cooper would "swiftly consider the findings to see if laws need to be tightened further".
