During a press conference on Friday, Mr Maillaud confirmed that each of the victims had at least one bullet in the head, and about 25 shots were fired in total - more than originally thought.
This has led investigators to believe that more than one gun was used in the killings, possibly by more than one attacker.
They are looking into reports of a green or dark-coloured four-wheel drive vehicle and a motorcycle, apparently seen by the cyclist who discovered the murder scene. But Mr Maillaud pointed out that such vehicles were common during the tourist season in a mountainous region
I found it on the BBC News website. How awful!