The couple and their children were away in Aspen, Colorado, for the holidays when the burglary took place.
More than $1 million in jewelry, including $150,000 worth of watches owned by Umansky, was stolen, according to People.
The break-in was reportedly discovered by a housekeeper. The culprits entered the property via a window, and the reality TV couple's home security system was not armed.
Luckily, though, a closet sensor triggered by the burglars was able to clock when the incident occurred, around 1:15 a.m. PT. Investigators are using surveillance camera footage to find the robbers!
At this time, however, the Los Angeles Police Department told People that they have no further information. The last post from Kyle was a photo of her family on Instagram, with the caption, "So happy to be back in beautiful Aspen with loved ones."
What do you think about Kyle and Mauricio's terrifying ordeal? Let us know in the comments section.