China says nine Chinese oil workers abducted in attack

A group of armed bandits raided a houseboat, taking some Chinese expatriates hostage. The incident occurred after a morning pep talk, with gunshots heard around the houseboat area. Personnel gathered at a muster point, where it was confirmed that some expatriates were missing and held hostage.

What did the group hear that prompted them to seek safety?

What was discovered during the personnel count at the muster point?