I thought it was two so far. Someone else mentioned there would be more. My guess is that this is correct--he's likely gotten away with quite a lot, but recently got sloppy.
He also photographed the man with the Green Helmet carrying the dead child.
While that photo may not have been altered, there is good suspicion that it was repeatedly staged. An unbiased photographer would reveal the fraud of the situation but a biased one will not disclose the tricks that make it seem real.
I said one more. But I was wrong, they didn't find it.