Suspect who claimed to have a bomb has surrendered to authorities, sources say

A suspect who claimed to have an explosive device in a truck near the US Capitol has surrendered to authorities, two law enforcement sources tell CNN.

The incident prompted multiple buildings in the area to be evacuated midday Thursday as authorities responded to an "active bomb threat investigation," the US Capitol Police wrote on Twitter.

A man drove a black pickup truck onto the sidewalk in front of the Library of Congress at 9:15 a.m. ET, claiming he had a bomb and displayed what looked like a detonator to the officer on the scene, according to US Capitol Police Chief Tom Manger.

Negotiators were in communication with the suspect and were trying to come to a "resolution," Manger told reporters at a press conference near the Capitol.