Pig heads have been dumped outside a building, days after claims it was being used as a mosque.
A plastic bag containing four pigs' heads were left on the doorstep of an old ambulance station, which is now a community centre, in Solihull near Birmingham just after 9.30pm last night, West Midlands Police said.
It follows claims last week that the local council was investigating whether the centre had been turned into a mosque without permission.
Police said CCTV footage showed a man leaving the bag containing the grisly heads on the doorstep before driving off in a light-coloured saloon car.
Detectives said they were treating the incident as a hate crime.
Some of the windows had also been damaged in a separate incident the previous night, police added.
Solihull Metropolitan Borough Council reportedly launched an inquiry last week amid claims the building was being used as a mosque without consent.
An online petition - which has been signed more than 3,000 times - claimed residents had not been consulted about the building becoming "a mosque".
In April last year, officials approved an application calling for the former ambulance station in Hermitage Road to be turned into a conference and training centre.
Chief Superintendent Alex Murray, of West Midlands Police, said those responsible for dumping the pigs heads should come forward "before we come and knock on their door".
"We've secured good quality CCTV of the culprits and my detectives are making good progress with the investigation," he said.