Update (11:22 p.m.): Delays have cleared, according to the Herndon Police Department. No information about the crash was released.

Earlier:

If you’re headed down the southbound lanes of Elden Street, be on the alert.

The Herndon Police Department said to expect significant delays on the 1200 block of the street due to an accident.

No other information was immediately available.

TRAFFIC AERT: Expect delays in the 1200-block of SB Elden Street due to an accident. Follow police direction. Updates as available. #herndonpd pic.twitter.com/w9awMHFR1Z

— Herndon Police (@HerndonPolice) April 25, 2019

This story has been updated.