BAFFLED cops in Moscow have discovered the bodies of two naked women stuffed inside black suitcases in separate parts of the city.

Forensic experts have been unable to determine the cause of death in either victim, whose contorted corpses were discovered three weeks apart.

Detectives now fear a “suitcase killer” preying on young women is on the loose after revealing there were “alarming” similarities between the two macabre incidents.

The identities of the deceased women is not yet known.

A cyclist found the latest suitcase in the Alley of Kremlin Cadets near a large shopping mall in Lyublino in southeast Moscow on Friday, said police.

The woman was naked but there were “no signs of a violent death or rape”, according to reports from law enforcement sources.

She is believed to be aged between 18 and 25 and had a distinctive tattoo on her back included a crown, and also writing.

The words on the tattoo have not yet been released by the detectives looking into the mystery.

Weeks earlier the naked body of a young woman was found in a black suitcase near a playground in Vorontsovsky park in southwestern Moscow.

Yuliya Ivanova, an official in the Investigative Committee, said no visible bodily injuries were found on the corpse.

Murder probes have been opened into both cases despite police not finding an obvious cause of death.

“At the moment all possible versions are being studied,” said a law enforcement source in the Russian capital. Some obvious matches are certainly alarming.”