Heartbroken and in a state of deep shock

The statement, made on behalf on unnamed family members, said his relatives were "heartbroken and in a state of deep shock".

I am not sure about the meaning of this sentence, especially the middle part!
i wish someone could interpret it for me.

"Heartbroken and in a state of deep shock" means that someone is profoundly sad and very surprised and upset.

Thanks for the comment, how about made on behalf on unnamed family members

Lets take it one idea at a time.

heartbroken

This can mean anything from breaking up with a long beloved spouse, to losing a job on which a whole family depends. Its not really clear from the info you gave, just what caused the heartbreak. It does, however, imply that some loss probably did occur.

and in a deep state of shock.

This right away gives you the feeling, without knowing the specifics, that this loss was profound, and irreversible. This could be finding out that someone has cancer, to actually losing them. Deep means serious, in this case.

Hope that helps. More information would be useful, in evaluating the meaning of these words.

ef _ carol

The words, "made on behalf on unnamed family members" mean this: the person speaking isn't necessarily speaking for himself. He is speaking for family members who are are not being named. Either the family members want to remain anonymous, or there are too many family members to list all of their names.

For example, if I wanted to remain anonymous while expressing how sad I was that Bob had died at his funeral, I might ask my friend Alice to speak on my behalf. Or, suppose all of Bob's 100 relatives wanted Alice to express their sympathy for them - she could just say that they are unnamed because she doesn't have time to list all 100 of them.

Honestly, I think the wording in your provided sentence is very confusing. It would make much more sense to say something like this: Alice says, "A friend of Bob's wanted me to express her sadness upon hearing of Bob's death" or "Bob's many relatives requested that I express their sadness upon hearing of his death."

I hope that has helped you!

this means that they are very sad of something that they cannot believe it happened