Experts on Thursday diffused explosive substances including a detonator found in a tiffin box near a railway track about 30 km from here in Kerala, police said.
Kottayam Superintendent of Police C. Rajagopal told reporters here that what was found cannot be termed a bomb but it contained explosive substances.
"A detonator was placed in a pipe and kept in a steel tiffin box which also had ammonium nitrate. Only after detailed scientific examination can more details be revealed on the nature of the substance," he said.
Alert railway officials on a routine checking operation near Veloor spotted the box.
Train traffic between Kottayam and Ernakulam was halted after the discovery.
