Malawi President Peter Mutharika on Friday warned suspected vampires to stop terrorizing people and told village chiefs to stamp down on witchcraft.His calls came as a vampire scare in two districts triggered mob violence and left six people dead. Lynch mobs accusing people of vampirism have been on the rampage since mid-September.

“If people are using witchcraft to suck people’s blood, I will deal with them and I ask them to stop doing that with immediate effect,” Mutharika told a gathering of leaders in Mulanje, a district with the highest incidences.

On Monday, the United Nations pulled staff out of two districts that have been swept up in the violence.