From CBC.ca (my emphasis in red):
“A United Nations military observer sent e-mails home to Canada reporting that Israel was bombing schools and waging ‘a campaign of terror against the Lebanese people’ shortly before he was killed by an Israeli bomb in Lebanon, said his widow.
Maj. Paeta Hess-von Kruedener of Kingston, Ont., a member of the Princess Patricia's Canadian Light Infantry, was one of four UN military observers who died when the Israeli Defence Forces bombed a marked United Nations post on July 25, 2006.
Cynthia Hess-von Kruedener said her husband's mission was to report on the hostilities in the area and she believes that is why Israeli forces attacked the Israeli United Nations Truce Supervision Organization (UNTSO) post, despite Israel's claims that the bombing was accidental.
‘Obviously they were unhappy with what they were observing. Maybe that post was in the way as well,’ she said. ‘I know my husband was reporting war crimes. And I guess they don't want to deal with that.’”