The applicable law is RPL 443-a(1)(b).
If you are a seller's agent in this situation dealing with a buyer that you don't represent, which appears to be the case by way of your terms client and customer, then there is no affirmative obligation to inform the buyer about the suicide. More so, you would be breaching your duty of confidentiality to the seller if you gave this information. Instead, you can only answer the question if the buyer asks in writing and you inform your client and your client approves of you answering.
