The Catholic Church has condemned the practice and questioned whether the new law is constitutional.

Congo is preparing for a crucial vote to elect a successor for President Joseph Kabila, who has been in power since 2001.

"He has a great capacity for synthesis, and his doors are open to all, whether to those in government or to those in opposition."

"If no more fighting happens during the coming months, people will slowly gain confidence and start to come back."

The bishops' call in late November came after two priests and at least 60 civilians were killed Nov. 15.

More than 40 people were massacred on Nov. 15 during a guerrilla attack on the Cathedral of Alindao and an adjoining compound.