Last week, we wrote about the so-called Croydon cat killer, also dubbed the MI-5 killer who is believed to have been responsible for as many as 400 deaths of small animals.
Police have now arrested a man in Northampton who may be linked after five cats were discovered dead and mutilated in the town over a four-month period last year beginning in August.
But the rescue group SNARL which has been actively investigating the killings which have taken place over a number of cities in the UK is downplaying the possibility that the Northampton arrest is the end of the killings.
Northampton Police also say the killings are not linked.
Northamptonshire Police has arrested a 31-year-old man in connection with a number of arsons in the Duston area and also in relation to a number of recent cat mutilations in Duston in October and November last year and offences in Kingsley Park from August and September last year. The man has been released under investigation.
We are not linking this arrest to the incidents that have taken place in London.
The force confirmed it was working closely with the Metropolitan police inquiry into a number of animal deaths, known as Operation Takahe.
But it said that although the offences were similar to attacks in the London area, officers were not sure that they had been carried out by the same person.
South Norwood Animal Rescue and Liberty (Snarl), which has been cataloguing the deaths and helping police with the investigation, has said it does not believe that the person arrested was behind the killings and warned pet owners that their animals were still not safe.
A £10,000 reward has been offered to anyone who provides information that could lead to the arrest of the killer.