(Bloomberg) -- Pig heads were found at two Malaysian mosques, the latest incident of desecration and vandalism following an inter-faith dispute over the use of the word “Allah” by non-Muslims.

Worshippers arrived for morning prayers at a mosque in Petaling Jaya, Selangor, to find the bloodied heads of two wild boars wrapped in plastic bags together with one-ringgit notes. Heads were also found in the grounds of a mosque three kilometers (1.9 miles) away, police said. Pigs are considered unclean animals in Islam.
“I advise the public to stay cool and not to react to certain people who are trying to stir the situation,” Selangor police chief Khalid Abu Bakar said in a telephone interview.
Acts of violence were reported against 11 Christian institutions, one Sikh temple and two Muslim prayer rooms in the past three weeks following a High Court judge’s decision to allow a Catholic newspaper to refer to God as “Allah” in its Malay-language section.