Police investigated those responsible for the accident, suspecting that the boat was reportedly overloaded and the trip was organized illegally. Possibly the workers were undocumented. A search and rescue team has been deployed to find more survivors. A police helicopter and more than a dozen boats were involved in the search-and-rescue effort. and ferries are a common form of transport in Indonesia, a sprawling archipelago. Sinking are common due to poorly enforced safety regulations. Passengers who survived said they paid high fares. an Indonesian woman believed to be responsible for the voyage was arrested as she tried to leave Batam for nearby Singapore.