Seven empty railway coaches reportedly rolled away unattended from Jolarpettai railway yard in Tamil Nadu, travelling nearly six kilometres before derailing near Thamaleri Muthur. The incident disrupted Bengaluru-Chennai train services, while railway authorities launched a clearance operation. Tirupattur: Seven empty railway coaches, which reportedly rolled away unattended from the railway yard at Jolarpettai Junction in Tamil Nadu's Tirupattur district, travelled nearly six kilometres without an engine before derailing near Thamaleri Muthur, disrupting.