The mishap which occurred when the Chhatrapati Shivaji Terminus-bound local train derailed near Titwala also threw traffic on the Central line out of gear.
"Five coaches of N-18 (Kasara-CST) local derailed between Titwala and Ambivli stations (61km from CST) at 2.30 P.M. today, resulting in the death of one person and simple injuries to three others," a CR statement said here.
Rail traffic on the up and down lines between Kalyan and Titwala has been suspended due to the accident, railways said.
A break-down train and medical van have reached the accident site along with senior officials as efforts were underway to restore traffic flow in the affected section, the statement added.