What appeared to be a major accident caused heavy delays on the Palmetto Expressway in Miami-Dade Wednesday morning.
The crash involving at least two cars happened in the northbound express lanes after Okeechobee Road.
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>It was not immediately known if anyone was injured, or how seriously. Emergency crews could be seen on scene.
Drivers were slowly merging onto the main lanes, increasing the backup.
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>By 7 a.m., the express lanes had reopened.
This is a developing story. Refresh for updates.