The RSPCA is investigating after four cats from the same road in Derbyshire died after a suspected poisoning.
The pets belonged to three families living on Patina Way in Swadlincote in Derbyshire.
They all suddenly fell ill between Thursday (9th July) and Sunday (12th July).
The cats - Benji, Pixie, Rupert and Syclla - were all rushed to the vets but died or had to be put to sleep.
The RSPCA believes someone may have deliberately put antifreeze down to “intentionally harm” the pets.
At this time of year we wouldn't expect anyone to be using antifreeze in their cars so we are concerned that someone is deliberately putting this poisonous substance down to intentionally harm cats.
It is an offence to intentionally poison or cause harm to an animal in this way and we are taking this matter very seriously.
Tests have been carried out on all of the cats. Investigators are asking anyone with information to come forward.