A flash flood originating in Bogor inundated at least six residential complexes located along the Bekasi River, West Java, with the water level reaching an average height of one meter. Thousands of families living at Villa Nusa Indah, Pondok Mitra Lestari, Kemang Ivy, Pondok Gede Permai, and Jaka Sampurna housing complexes, Jati Asih sub district, were affected by the flash flood, Yusrizal, head of Bekasi's waterway service, said here on Saturday. "The flash flood started at 11 pm local time on Friday and subsided at around 3 am local time on Saturday. The flood was due to a change in land spatial in Bogor," he said when inspecting flood-hit Pondok Mitra Lestari housing complex, Jati Rasa, Jati Asih sub district. "Earlier we had sent a warning to local residents through their neighborhood leaders," he said. The water level at Katulampa water gate, Bogor, reached a height of 250 centimeters following incessant downpour in the city on Friday afternoon, ANTARA reported. In the evening, the Bogor authorities sent a first-degree warning to residents living in Jabodetabek (Jakarta, Bogor, Depok, Tangerang and Bekasi) to make them alert of possible flood disaster. The local disaster mitigation office concentrated especially on Jati Rasa sub district following a dike breakdown at the area, he said. Heavy rains which had fallen since Friday afternoon at around five pm, had triggered a flash flood in Bogor. Tens of houses located along the Ciliwung river area were affected by the flood.