Sagara Sousuke has apparently been transferred to the Chicago PD

Authorities Blow Up Small Refrigerator

Authorities blew up a suspicious package outside the downtown federal courthouse Wednesday that turned out to contain a small refrigerator. The 3-foot-high cardboard box was discovered by a granite bench outside the John C. Kluczynski federal building and near a U.S. post office, police Sgt. David Villalobos said.

[...]

Authorities temporarily blocked off streets leading to the federal building while a small charge was set off next to the box.

So you see, Sousuke had the right idea! Better safe than sorry!