It’s been a tense few days in Israel, and that’s putting it lightly. On Saturday evening, November 16, two flares landed dangerously close to Prime Minister Benjamin Netanyahu’s residence in the coastal town of Caesarea.

While Netanyahu wasn’t home at the time, the incident immediately set off alarms. By Sunday morning, Israeli police had arrested three suspects they believe were behind the flare incident.

So far, details are under wraps—a gag order has been placed on the investigation for 30 days—but what we do know is that this wasn’t just a random prank.

A Troubling Pattern

The flares are just the latest in a string of security incidents that have left many Israelis on edge.

In fact, this comes about a month after a drone targeted Netanyahu’s residence, with Hezbollah claiming responsibility.

While investigations continue, some officials aren’t holding back their suspicions.