WASHINGTON — Congressional leaders paid tribute Wednesday to slain U.S. Capitol Police Officer Brian Sicknick in the building he died defending, promising his family and his fellow officers that they will never forget his sacrifice.

Sicknick died after an insurrectionist mob stormed the U.S. Capitol on Jan. 6, interrupting the electoral count after then-President Donald Trump urged them to “fight like hell” to overturn his defeat. The U.S. Capitol Police said in a statement that Sicknick, who died the next day, was injured “while physically engaging with protesters,” though the cause of his death has not been determined.