The latest in a series of incidents was reported by the Association of Vojvodina Hungarians, which said that unidentified persons had relieved themselves in a Catholic chapel in the village of Palic near Subotica.
The leader of the association, Joszef Kasza, criticised the police for not having found the perpetrators, adding that he had reported the incident to a senior Hungarian government official.
The Christian Adventist Church near Sombor was set on fire over the weekend. The fire caused considerable damage, but there were no casualties.
The incident was condemned by Serbia's Religions Minister Milan Radulovic.
The media in Vojvodina recalled that several religious facilities in Vojvodina and Serbia proper had been stoned, plundered and attacked with hand grenades over one weekend in December.
Religion sociologist Mirko Djordjevic told the Novi Sad-based daily Gradjanski List of Tuesday that religious incidents were caused by "a very aggressive election campaign".
Djordjevic said that extremists targeting smaller religious communities was a consequence of citizens' lack of information on the existence and work of those communities.
"To overcome that, action is needed at the level of the state and the majority Serb Orthodox Church," the analyst said.