在华盛顿枪击事件发生之前, 嫌疑人自称"友好联邦刺客". Suspect calls himself 'Friendly Federal Assassin' before Washington shooting.

华盛顿枪击案的嫌疑人在事件发生前, 在社交媒体上称自己为"友好联邦刺客". A Washington shooting suspect identified himself as a "Friendly Federal Assassin" in social media posts before the incident. 官方尚未确认动机或伤亡人数. Authorities have not yet confirmed a motive or the number of casualties.