Ask the trust to share their trust deed.
Ask the trust to share their board resolution and approval for selling the property.
Ask them to share their POA holder's name and under which authority he holds the same! Whether the same is registered or not? If not ask them to register first.
Afterwards give a public notice, so that anyone wishes to dispute the selling can give you notice accordingly!
Do proper searching.
If everything goes well, please process for the sale. Once Sale concludes, please take immediate possession.