Traffic flowing out of Washinigton was disrupted near the height of the evening rush period Monday after officials received an indication that a car trying to enter the White House complex might have been suspicious.

An investigation of the vehicle at 17th and E Streets NW prompted officials to close 17th Street south of Pennsylvania Avenue NW. The street is one of the main arteries for outbound motorists in the evening. Cars were diverted onto 19th Street.

Streets remained closed for about an hour after the car first aroused suspicion at 6 p.m. A dog used to screen cars by the Secret Service gave an alert. The car was eventually determined to pose no threat.

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