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This paper considers the tasks of multiple event detection and propagation in Wireless Sensor Networks (WSNs) thatare monitored by multiple Sinks. The event propagation is achieved by introducing extensions to the routing protocol for WSNs. To accomplish the task of multiple event propagation, the proposed extensions employ the routing protocol's properties. The first property of the protocol is the availability of multiple paths that are created and stored during a subscription message's propagation. The second property is based on providing Quality of Service (QoS) by selecting the route with the least cost for high-priority event notification messages. Moreover, the QoS property is extended to take into account the availability of multiple Sinks monitoring the WSN. We propose having a Distributed Database Management System over the multiple Sinks, which contains event notifications. This way, a high-priority event notification message can be delivered from asource node to the Sink toward which there exists a pathwith the least cost, and will be available in the database for the Sink that has subscribed to the event. We discuss the extensions to the routing protocol and present their proof of correctness.