Two subway trains in Hong Kong have collided while testing a new signal system.
According to reports, the incident occurred between the Central and Admiralty stations before the service opened to the public early Monday.
No passengers were on board, but the drivers were taken to hospital.
Authorities have now launched an investigation into the incident.

Israeli fire kills three people in Gaza as truce deal staggers
Cuban forces kill 4 exiles who attacked from Florida speedboat
Hillary Clinton to testify in congressional Epstein probe
Death toll from Brazil floods rises to 46, 21 people still missing
Near-blind refugee found dead in Buffalo after release by US Border Patrol
