ESPN Chicago reports:

In the aftermath of the death of Osama bin Laden, the Chicago Bulls will use metal detectors to screen all patrons entering the United Center before Game 1 of the Eastern Conference semifinal against the Atlanta Hawks on Monday.

The NBA issued the mandate for the conference semifinals and all subsequent playoff games.

Not all arenas in the league regularly use metal detectors. At the United Center, patrons are visually inspected. Metal detectors are only employed in a full inspection when, according to the venue’s website, it is determined that “the potential is high for inappropriate or illegal items to be brought into the building.”