Authorities say a skydiver was killed when she walked into a spinning aircraft propeller at an airfield in Estonia.

The incident happened as a group of skydivers were boarding the turboprop plane in the western town of Rapla.

Kulli Kivioja of the regional prosecutor’s office said the 29-year-old victim died instantly after she was hit by one of the twin-engine aircraft’s propellers. Kivioja said Saturday’s incident is under investigation.

Parachuting club Skydive Estonia says the woman was an experienced skydiver who had made 224 jumps.