Authorities have already withdrawn the licenses for a pistol and rifle. Mr Fehr owned the pistol, while the Elephant Foundation owned the rifle.
https://www.chiangraitimes.com/news/elephant-sanctuary-in-phuket/
In the case of firearms, David possesses two firearms, a handgun, a Glock, and a rifle, and has a Grade 4 licence to own and use firearms after seeking authorization for buying and possessing them in the name of the foundation.
https://www.khaosodenglish.com/news/2024/03/08/the-david-effects-swiss-man-case-leads-for-more-inspections/