lilongwe unite nations say monday pull staff two district southern malawi vampire scare trigger mob violence least five people kill belief witchcraft widespread rural malawi one world poor countries many aid agencies ngos work spate vigilante violence link vampire rumor also erupt malawi 2002. district severely affect ongoing stories blood suck possible existence vampires un department safety security undss say security report phalombe mulanje district see reuters act un resident coordinator florence rolle say email response question base report un staff relocate others still district depend locations operations undss continue monitor situation closely ensure affect un staff back field soon possible rolle say rolle say many workers relocate undss report say least five people kill area since mid-september lynch mob accuse vampirism say mob search vampires mount road block district raise security concern malawian president peter mutharika say report distress agonize development grave concern president entire government office say statement undss report say vampirism rumor appear originate neighbor mozambique although clear spark recommend temporary suspension u.n. activities area situation normalize say ngos pull personnel district temporarily suspend program name organizations vampire scare prompt u.n. pullout southern malawi