Jun 1, (Emirates 247) : A worker at Japan's Tokyo Station got an unpleasant shock after opening an abandoned suitcase that no one had claimed for a month — the decomposing body of an elderly woman inside.

The Tokyo Metropolitan Police said the corpse was found Sunday in a suitcase in a temporary storage area at Tokyo's main train station. Japanese media reports said the body was of an elderly woman, 140 centimeters tall (4-feet, 7-inches) tall. Police are trying to establish her identity.

The bright yellow suitcase was left in an unlocked coin locker on April 26, according to the media reports. It measured 70 by 50 by 25 centimeters (28 by 20 by 10 inches).

Nothing unusual was observed about the suitcase, no odour or anything, said Junichi Omoto, a spokesman for regional train company JR East.

"We were surprised and horrified," he said.

It's normal practice to hold abandoned luggage for a month to see if anyone claims it.

Major Japanese train stations have banks of lockers for travellers to store items temporarily