Funny, only Haaretz is reporting 'settlers' were trying to take a short cut to a spring. Other online papers report that masked men tried to enter mosque. The other bit that makes no sense is that instead of calling the police, the Muslim worshipers called the local youth (must have been on stand-by). Sounds as if the immediate and violent reaction (at that hour!) was rather planned to happen.
ISIS kills 22 in Yemen's Sanaa, Aden; targets both gov't and Houthi rebels (Reuters)
from the article: Palestinians clash with settlers, Border Police in East Jerusalem