Foreign involvement • 25%

Lone actor confirmed • 25%

Investigation inconclusive • 25%

Accomplices identified • 25%

Accomplices identified • 25%

Foreign influence confirmed • 25%

Other outcome • 25%

Lone actor confirmed • 25%

Acted alone • 25%

Lone wolf attack confirmed • 25%

Part of larger terror cell • 25%

Inconclusive due to lack of evidence • 25%

Lone wolf attack • 25%

Part of a larger network • 25%

Domestic terrorism • 25%

Other • 25%

Investigation ongoing • 25%

No suspect identified • 25%

Suspect apprehended but not charged • 25%

Suspect apprehended and charged • 25%

Unclear or inconclusive • 25%

Part of a larger plot • 25%

Identified domestic group • 25%

Identified foreign group • 25%

Lone actor • 25%

Unresolved • 25%

Part of larger network • 25%

Unclear motives • 25%

Other • 25%

Lone wolf attack • 25%

Solely domestic actors identified • 25%

Investigation inconclusive • 25%

Lone wolf attack • 25%

International terrorist group involvement • 25%

Part of larger network • 25%

Lone wolf attack • 25%

Other • 25%

Insufficient evidence • 25%

Other • 25%

Stricter bomb-making material regulations • 25%

No significant policy change • 25%

Increased surveillance measures • 25%

Some suspects identified • 25%

Identified but not arrested all suspects • 25%

No suspects identified • 25%

Identified and arrested all suspects • 25%

No suspects apprehended • 25%

Partial apprehension of suspects • 25%

All suspects apprehended and charged • 25%

Investigation ongoing • 25%

Other • 25%

Commercially available explosives • 25%

Homemade explosives • 25%

No explosives found • 25%

International Terrorism • 25%

Other • 25%

Domestic Terrorism • 25%

Lone Wolf Attack • 25%