Mumbai, Jan 28 (IANS): A derailed coach and a dumper stuck at a level crossing threw local trains' schedules out of gear in Mumbai and suburban Thane, adding to the Monday morning blues of lakhs of commuters in the sprawling western megapolis.

Train delays occurred on both the western and central railway lines as a coach jumped rails on the western line, and a dumper got stuck at a level crossing on the central, officials said.

"A coach of a local train was derailed while on its way to the yard in Borivali (north Mumbai) post 2 a.m. Monday. There are no casualties there were no passengers in the train. How the coach got derailed is a matter of investigation," an official from Western Railway told IANS.

Even as the obstacle was removed early Monday, commuters were left waiting for local trains that were delayed by 15-20 minutes. However, no train services were cancelled.

The Central Railway services also were delayed as a dumper truck broke down while it was passing the level crossing near Diva in Thane district.

"It took over 15 minutes for the broken down dumper to be moved away from the tracks. This delayed the local train services on central line by 15-20 minutes," said an official from the Central Railway.

Over 35 lakh commuters avail of local train services everyday on the western line, while 36 lakh commuters travel on the central route.