The family of a killed Taiwanese tungsten executive says police have the wrong story, and they suspect the murder was ordered by rivals after his technology — a case that now touches on national security concerns.

• Huang Sheng-hsuan, chairman of a tungsten and cobalt materials company in Pingtung, was found beaten to death, and one former employee has been arrested.
• The family says the suspect was only a fired ex-worker with no personal ties to Huang, and was likely sent by someone else.
• A neighbor reportedly saw three men and a woman visiting the house that afternoon, pointing to accomplices.
• Nothing was stolen and the security system was never triggered, which does not fit the suspect's claim of a robbery gone wrong.
• The family believes Huang was targeted for his tungsten processing technology, which he refused to share with competitors.

Outlook: Police say the case is still open and promise a crime scene reconstruction and more witness questioning once the heavy rain in Pingtung stops.