Several trains, including Kozhikode-Thiruvananthapuram Janshatabdi Express, were halted at different stations as state and railways police and bomb squad launched a search immediately knowing about the presence of the object around 11 AM.
According to police, a steel tiffin carrier with some wires attached to it was found at the northern end of the bridge across the Muvvattupuzha river near Piravom Road station.
Train services were resumed after police took away the object for examination and the track was found safe after a thorough search, police sources said.