Facebook account was hacked?

[Naya]

I chatted with one person on facebook, after a month i see that there are my messages but instead of his messages there is written: This message is no longer available because it was defined as an abusive or marked as spam.
So only my messages r present,not his.How he did so?how to do so?HOw to do it?if there wasnt written anything wrong.
it was him to chat with me, but how could he make his messges unseen?( so instead of his messages there is written: This message is no longer available because it was defined as an abusive or marked as spam.)i dnt believe his fb account was hcked,but if there is written:
This message is no longer available because it was defined as an abusive or marked as spam.-does it mean he could report as he was hacked?how could he do that?is it possible?how could he prove his statement?
URGENTTTTT!PLS HELP
ASHOK K -how can i write to you???and ask one more question?pls answer in my next questions

[ASHOK K]

nope this is not a hack just facebook blocked his account (because it defined as abusive)

Regards,
Thiru Kumaran

http://techgator.org/

[Angeleyes]

Facebook blocked his account.