Despite this slight clemency, militant labor radicals continued to pressure Stephens, resulting in threats, and eventually, actions of violence. On the evening of December 17, 1917, a dynamite bomb exploded at the foot of the Governor's Mansion in Sacramento. Although Stephens was not injured, the explosion caused considerable damage to the kitchen. Radicals from the IWW were later blamed for the attack. In an unrelated threat, labor radicals also threatened to destroy both the California State Capitol and the Governor's Mansion if a $50,000 ransom was not met.