The accident happened at the I-495 Beltway between Connecticut Avenue and Georgia Avenue in Bethesda around 8:40 p.m. on Sunday, May 8, Montgomery County fire officials said on Twitter.
One person was said to have been trapped and injured when their car rolled over, officials continued. No word on their injury.
K9 units were said to be searching for the person who fled the scene, according to unconfirmed reports. This is a developing story so check back for updates.
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