MANILA - Two Canadian tourists, a Norwegian resort manager and a Filipino woman were kidnapped by unidentified gunmen from a popular resort island in the southern Philippines, the army said on Tuesday.Philippines army Captain Alberto Caber said the four were taken at gunpoint during a raid late on Monday night on the Oceanview resort on Samal island, near Davao City, the largest city on Mindanao island in the restive southern Philippines.Military and police officials were surprised by the latest attack, which came as a reminder of volatile security in the south despite recent peace initiatives with Islamist rebels.The Davao region has been relatively peaceful for more than a decade. In 2014, a peace agreement with the largest Muslim rebel group in the south ended 45 years of conflict that had killed about 120,000 people and displaced 2 million."Four people were taken but we do not know what group was behind the attack," Caber told reporters. He said there were about 30 foreign tourists at the resort at the time of the raid."It appeared the foreigners were the targets, they were not taken at random," he said.