Amateur astronomer captures sprites over Finland

This link may be interesting - An amateur meteor watcher captured sprites over central Finland on October 9. The text is in Finnish but there are links to good pictures, and as you can see the authors refer to Martin and Yoav.

URSA article

Our Sodankylä infrasound station detected a chirp during the same day but at a different time (8:57 UT), so there must have been more extensive sprite activity!