Is it alright, for a journalist, to enter the uninhabited house of a son of Muammar Gaddafi?

I was watching CNN this evening and they showed a journalist who was entering the house of, I believe, Saadi Gaddafi.
He supposedly left the house in a hurry, as the journalist told us, because, for example, the table was ready to host some guests.
He walked through the rooms of the house and was going through papers he found on the ground.
Now, this Saadi may well be a bad guy (I don’t know) but does that mean that everybody who feels like it, can enter his premises without consent?
Isn’t that considered illegal house entering/burglary?
Is it morally justified?
What say you?