The disruptions were caused by a “foreign wire” seen hanging from overhead equipment between the Mulund and Thane stations, and a fire in the relay room at Kanjurmarg. Mumbai: Suburban train services on Mumbai’s main line were disrupted on Monday morning after a fire was seen hanging from overhead equipment between the Mulund and Thane stations.The “foreign wire” was detected at 9.23 am on the down slow line, the Central Railway said.