A controversial case of a young man who died in Beijing's subway three years ago was heard in court on Monday, but the result is still unknown.

Ma Yue, 21, died after he fell from the platform at the Gulou Dajie station, located in the capital's Xicheng district on Line 2, on Aug 23, 2010. However, different opinions concerning the cause of his death have complicated the case.

The district's work safety administration established a special team after the accident to investigate the case, and said Ma died of electrocution after his fall from the platform.