RSPCA inquiry into Cross Hills dog poisoning ends
The RSPCA has closed an investigation into the death of nine poisoned dogs in Yorkshire after failing to find the source of the substance.
The dogs suffered from seizures after being walked on a path off Station Road in Cross Hills, near Keighley, in May.
Tests revealed strychnine, a mole poison removed from legal sale in 2006, was responsible for causing the animal's deaths.
The RSPCA said it had exhausted all lines of inquiry.
At the time of the deaths, the animal charity said the dogs "suffered horrendously".
Ch Insp Beth Clements, from the RSPCA, said: "Despite our best efforts and the best efforts of all the organisations and individuals involved we simply have nowhere to go with this investigation.
"With a heavy heart, I have to say that we have fully exhausted all lines of inquiry and the investigation is, as such, now closed.
"Of course, should any specific information come to light we will look to reopen it but our investigation is no longer ongoing."