Bunshiro Naito lost his life at the age of 44, one of 10 Japanese killed in the 2013 hostage crisis in Algeria.

The fact that his company promised not to release his name to the public left his mother unsettled.

During the four-day standoff with Islamist militants in the North African country, Sayoko Naito said the information she received from JGC Corp., the Japanese engineering firm that dispatched the workers including her son, was sketchy at best.