Houston police said they responded to reports of an officer hitting the wall along I-610 South Loop at Stella Link Road.
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ABC13's SkyeEye video showed the traffic holdup along the westbound lanes of the loop.
Police warned drivers to expect delays as some westbound lanes are shut down on Main Street.
According to HPD, the officer was transported to the hospital, but their condition remains unknown.
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This is a developing story. We will update as more information becomes available.