Kieft's first plan to reduce costs was to solicit tribute payments from the tribes living in the region. Long-time colonists warned him against this course, but he pursued it, nonetheless. Tribal chiefs rejected the idea. Pigs were stolen from the farm of David Pietersz. de Vries, so Kieft sent soldiers to raid a Raritan village on Staten Island, killing several people. The Raritan band retaliated by burning down de Vries' farmhouse and killing four of his employees, so Kieft offered bounty payments to rival tribes for the heads of Raritans. Colonists later determined that de Vries' pigs had been stolen by other colonists. In August 1641, a Weckquaesgeek Indian killed Claes Swits, an elderly Swiss immigrant who ran a public house frequented by settlers and Indians alike in Turtle Bay, Manhattan. Another incident occurred at Achter Kol along the banks of the Hackensack River. Settlers and some Hackensacks had been drinking alcohol at a trading post when a conflict arose over a missing coat which ended in the death of the post's foreman.