Gunmen kidnapped a Filipino along with three other foreign aid workers in a refugee camp complex in Kenya last Friday.
Kenyan police said the hostages are working with the Norwegian Refugee Council.
Initial investigation showed the suspects killed the aid workers' driver. Their vehicle was later found abandoned.
The Kenyan army has deployed helicopters to pursue the kidnappers who are believed to be heading towards Somalia. – ANC Headstart, July 2 2012