Kenya Pursues Somali Kidnappers From Refugee Camp NAIROBI, Kenya (AP) - Kenyan police and military forces on Saturday pursued Somali attackers and their four foreign hostages taken from a refugee camp a day earlier, but a police commander said it was possible that the group had crossed into Somalia. The commander, Philip Ndolo, also said that a security escort had originally been arranged to accompany the foreigners, a high-ranking delegation from the Norwegian Refugee Council, but that the aid group decided at the last minute to travel through the Dadaab refugee camp without an armed escort. The council's secretary general, Elisabeth Rasmusson, was present during the attack on Friday but was not harmed or taken. Ms. Rasmusson said Friday that the attack happened on a main road toward Dadaab in "what is recognized as the safe part of the camp." She said four men with pistols carried out the attack against the group's two vehicles. The attackers only took one of the vehicles. After an attack on a Doctors Without Borders convoy last year in which two Spanish women were abducted, some aid groups began using security escorts in Dadaab, a series of sprawling camps for refugees from Somalia. But the Norwegian Refugee Council did not have guards on Friday. "They had arranged the previous day with the understanding they would get some security officers in the morning, but for some reason they decided not to take the security officers," Mr. Ndolo said. A Norwegian Refugee Council spokesman in Norway, Rolf Vestvik, said a risk analysis was carried out before Friday's movements through Dadaab and it was decided that it was safe for the convoy to travel. "We wouldn't have carried out such travel if it wasn't seen as being safe," he said. But in a situation like that there is always a risk factor and we do everything we can to minimize the risk to our staff. But if you are going to operate in areas where there are refugees, you are operating in areas where there is certain risk. Mr. Ndolo said that security officials were pursuing the attackers in an area with no cellphone coverage, so he was waiting for an update. But he said it was possible that the group had crossed the border. "The vehicle was abandoned not so many kilometers from the border, so there is the possibility that if they decided to walk, with an eight hours" walk they would have been at the border, and if they made a connection with other militias they could have been picked up in a vehicle there," he said. That is our worry. The Norwegian Refugee Council has not identified the nationalities of the four kidnapped workers. But a security official familiar with the case said that two were from Canada, one from the Philippines and one from Norway. One of the Canadians is of Pakistani origin, the security official said. Militants have penetrated Dadaab several times over the last year. The two Spanish women from Doctors Without Borders were kidnapped in October, and are still being held, most likely in Somalia. A spate of cross-border attacks last year, including around the resort town of Lamu, prompted Kenya to make a military push into Somalia last October against Islamist militants from the Shabab rebel group.