A reward of £1,000 is being offered to anyone with information about the recent fatal animal poisonings at a popular park.

Brent's People for the Ethical Treatment of Animals Foundation (PETA) is offering a reward of up to £1,000 for information leading to the arrest and conviction of the person or persons responsible for leaving poisons in Fryent Country Park in Kingsbury for animals to eat.

The poisons, organophosphates, have resulted in the deaths of three dogs and caused the suffering of at least three others, who required veterinary treatment.

Ben Williamson from PETA said: "It is imperative that any community faced with the abuse of animals take measures to find the culprit or culprits and stop the violence, animal abusers are a danger to everyone – they take their issues out on whomever is available to them, human or non-human."

On Thursday, March 13, three dogs ate adulterated meat placed on a grass verge in Salmon Street and one of the dogs died later that evening. The other two survived after receiving veterinary treatment. The next day, two more dogs ate poisoned meat that had been placed in the undergrowth in Salmon Street-one of the dogs died and the other survived after veterinary treatment.

Sergeant Peter Rowntree, from Harlesden Police Station, said: "This is such a nasty, cruel act which has killed three beloved dogs and endangered all domestic pets and wild animals, in such close proximity to a country park."

Animal welfare officer at Brent Council, Angela Moruzzi, said: "We are advising people in the area that it is best to keep their dogs on the lead, or even put muzzles on them."

Anyone with information about this case is encouraged to contact Brent Police on 0208 733 3804. For more information about helping animals, please visit PETA.org.uk.