Facebook(Submitted by Hayley Cooper) In this day in age, details of a tragedy that would have been private years ago are becoming more and more public.

Over the past few days the Facebook post reportedly written Randy Janzen, seemingly to confess to the murders of his wife, sister and adult daughter, has been shared internationally.

Social media expert Kemp Edmonds says these types of posts can create an invasion of privacy for those directly affected, but can also act as powerful tool.

“There are a number of tragedies, you know, people who have expressed thoughts about ending their own lives and sharing that on social networks. Their Facebook friends, who are really their friends in real life, start to scramble. You know, that’s the group that’s most affected. People are taken quite seriously because they know who that is on the other end,” he explains. “It’s so easy for people to make statements online, whether they’re threatening a political entity and end up facing charges for that type of thing or they’re expressing their own sadness and grief.”

Police say they were alerted to the possibility Janzen had harmed his family last week through social media and responded immediately.

Investigators are expected to update the case this week. They haven’t confirmed how many victims there are, but have said they’re dealing with two crimes scenes — one in Langley, the other in Rosedale.