Police are appealing for information after two newborn lambs were killed in a "despicable" attack in a west London park.
The two lambs, both less than a day old, were found beaten to death at the Bedfont Lakes Country Park in Hounslow with injuries unlikely to have come from an attack from another animal.
One of the lambs was found dead in a tree, while the second had to be put down by a vet due to the severity of its injuries. The incident occurred sometime between 10 April and the morning of 11 April.
Other lambs were also injured, but are expected to make a full recovery. All sheep in the field have since been removed from the park for their own safety.
Metropolitan Police now want to speak to three males who were seen in the area before the incident.
The first is described as a white, aged 16 to 18, tall, chubby build, with scruffy dark ginger hair which was gelled or swept forward.
The second is white, aged 16 to 18, average height, slim build, short dark brown hair, thin face with an obvious gap between his top two front teeth. The third is also described as white, aged 16 to18, slim build, with short brown hair.
PC Jody Whitehouse, the investigating officer, said: "I am appealing for any information to this despicable act which has not only caused distress to the owner but also to members of public who use the park and see the sheep on a daily basis.
"I am also appealing to the three males to contact us, or anyone who recognises them from the descriptions to contact us, so we can speak to them regarding this incident."
Anyone who recognises the three males or who has any information about the incident can contact PC Whitehouse at Feltham Police Station via 101. Anyone who wishes to remain anonymous can contact Crimestoppers on 0800 555 111 or via crimestoppers-uk.org.