I'd like to wait for clear information out there before making big comments but seems to me that the PLA forces in the area might have lost patience with the constant testing and decided to make an example out of one group who went too far. And it escalated into people getting killed. The Chinese side are either keeping their casualty figures unreleased either because a) they got truly stomped in the brawl or b) don't want the Indians to lose any more face than absolutely necessary. With the general behaviour we've seen, I'm inclined to believe the latter and they're giving yet another way out.
Patrol Point 14 seems to be the site of the incident. The latest reports in previous days and weeks have stated that the Chinese took the heights on the Chinese side of the LAC and encamped, whereas in the past they would simply patrol. I am not inclined to believe that the Chinese troops crossed the LAC to the other side. It does appear, as Indian media have reported, that it was the Indian troops who became upset that the Chinese had not de-camped and returned back down from PP14, but had instead remained. That appeared to the Indian troops to have violated the de-escalation agreement. As a result, the Indian troops CROSSED over to the Chinese side of PP14, which is where the violent clash took place. This makes sense because usually the separation of LAC occurs at the most physically untenable position beyond which neither side could maintain an advantage. In this case, it was unfortunately a cliff face, and not surprisingly an all out brawl resulted in several soldiers falling over the ledge. There was also mention of a landslide / collapse wholesale of the cliff ledge.