Showing that the Islamic extremist group Boko Haram remains a threat, a local self-defense group saved Christians gathering to celebrate Christmas in a town in northern Cameroon.

According to AllAfrica.com reports, the self-defense group saw a suspected member of Boko Haram riding a bike toward the Christians. When they tried to search him, he detonated his bomb, said the state’s governor. He killed himself, two members of self-defense group and a nearby civilian. Christmas day attacks on three other towns were also reported.

The Nigerian government claims to have driven the Islamic terrorist group out of their home in the Nigerian part of the large Sambisa forest. It seems to have survived across the border in Cameroon.

Not Yet Safe

However, Nigeria is not yet safe. On the same day as the attacks in Cameroon, two young female suicide bombers tried to attack a market in Maiduguri. Maiduguri is the largest town in the northeastern Nigerian state of Borno.

“One of the bombers was instantly killed in the explosion, while the second was lynched by irate mob in the vicinity,” said a spokesman for the Borno state police. Security forces detonated the other bomb.

Congratulating Nigerian president Mohammadu Buhari for his success against Boko Haram, a leading opposition party warned that other forests where terrorists and criminals hide out needed to be cleared. They “have become killing fields,” said the spokesman for the Peoples Democratic Party.

The previous president, Goodluck Jonathan, a Christian, was a member of the party. Buhari, a retired general, is Muslim.

As reported on Monday, Boko Haram has killed at least 20,000 people and displaced at least 2.6 million since 2009. By keeping farmers from farming, the group has put 14 million people in need outside help.

In October, 21 of the schoolgirls kidnapped by Boko Haram were released and returned to their homes for Christmas. About 250 more remain missing. Many are thought to be have been forced to marry Boko Haram soldiers and convert to Islam.