A seven-car crash has blocked the southbound inside lanes of the Loop 101 Pima Freeway at Frank Lloyd Wright Boulevard.
The crash happened just before 5 a.m. and also is blocking the off-ramp of the freeway at Frank Lloyd Wright.
Arizona Department of Transportation traffic cameras showed traffic backing up considerably.
There was a report of injuries, but no details were available.
ADOT anticipates traffic to be affected until around 6:30 a.m.
Stay with KPHO.com and CBS 5 News as this story develops.
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