MCSO: Shots fired report forces closure of I-43 NB near North Avenue

MILWAUKEE (CBS 58) -- Milwaukee County Sheriff's Office officials are investigating a report of shots fired on I-43 northbound near North Avenue on Tuesday, March 9. 

The MCSO closed the northbound lanes near the incident for more than an hour. 

Backups mounted as officials worked the scene. 

This is a developing story. Stick with CBS 58 on air and online fore updates. 

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