A helicopter operated by a rescue service has crashed in central Slovakia, killing all four people on board, according to the Daily Mail.

The rescue service — Air-Transport Europe — says the crash occurred late Wednesday near the village of Strelniky shortly after the rescuers took on board a man with a broken leg and the Bell 429 helicopter took off, heading to a hospital in the regional capital, Banska Bystrica.

Service spokeswoman Zuzana Hopjakova says it took several hours before the site of the crash was located early Thursday in a local forest.

Authorities are investigating the cause of the crash.

Source: MENA