Hunters killed more than 200 elephant in six weeks in the "massacre" because of Asian demand for ivory.
A local official said that the fishermen armed to the teeth of Chad and Sudan have spent most of the elephants in the national park Popa Ndjeda in the far north of Cameroon in a campaign of murder during the dry season.
Jumbo Haman said governor of the region in North Cameroon, "We are talking about a very serious condition of the fishing operations across the border, including fishermen armed with modern weapons from Sudan and Chad have spent on this wild species to reap money from the international ivory trade."
He added, speaking on local radio that some fishermen were riding horses and cooperated closely with the local population where the meat of elephants gave them for free, while the population expressed their happiness for the disposal of animals that were destroying their crops.
He said the International Fund for Animal Welfare that fishing operations across the border are common during the dry season but the size of the killings so far this year is unprecedented.
He said the Fund in a statement: "the last great massacre can not be emulated Bay (killings) in previous years."
Referring to the record number of seizures of ivory in 2011, warned the group Traffic on the track trends related to wildlife trade from an increase in hunting elephants from Africa to meet the demand on the Asian ivory which is used in the manufacture of jewelry and ornaments.