Lee Sun Gyun's leg hair has reportedly given inconclusive results for his latest drug test.

According to recent reports, the Incheon Metropolitan Police Agency secured Lee Sun Gyun's leg hair during their first investigation last month and requested a drug test from the National Forensic Service, who returned with inconclusive results. The National Forensic Service has confirmed the actor's leg hair was unable to be used for testing as the hair was "non-appealable." 

The exact reason was not disclosed, but police are considering re-collecting leg hair from Lee Sun Gyun and requesting a re-testing as there's a possibility the amount of hair collected was not sufficient. For the police, Lee Sun Gyun's leg hair testing is said to be the last chance to secure evidence against the star for drug use.

The actor's hair stands have already tested negative in a drug test held earlier this month. Police stated the negative results could mean he did not take drugs during the past 8-10 months. However, they still moved forward with the investigation as the suspicion of drug use still stands due to the fact Lee Sun Gyun was blackmailed and handed over 350 million won to 'A', who threatened to expose the actor's drug use.

The police are also facing backlash for drug investigations into Lee Sun Gyun and G-Dragon amid speculation of lack of concrete evidence against the celebrities.