TUGUEGARAO CITY, Cagayan: A P500,000 reward was put up by Gov. Manuel Mamba for any information that will lead to the suspects in the killing of Pamplona Vice Mayor Aaron Sampaga last August 5. Sampaga was gunned down by two unidentified assailants while at his friend’s house in Barangay Masi, Pamplona. He was interred on Saturday. Police are looking at the political angle as one of the motives in the killing.