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.

No evidence alleged Bondi gunmen received military training in Philippines
At least 12 killed in Nigeria mining site attack
Russian attack on Ukraine's central Cherkasy injures six, causes blackouts
UN, aid groups warn Gaza operations at risk from Israel impediments
Israel approves natural gas deal with Egypt, Netanyahu says
