Updated

Authorities are expected to release dashcam video Thursday of a traffic stop in which a white officer shot and paralyzed an unarmed black motorist.

The Nov. 1 shooting of Jerime Mitchell by officer Lucas Jones has sparked protests in Cedar Rapids.

A grand jury declined Monday to charge Jones. The county prosecutor defended that decision, saying Jones fired in self-defense during a scuffle in which Mitchell was trying to drive away.

Mitchell's supporters have criticized the decision because the grand jury never heard testimony from Mitchell, who disputes the officer's version.

In a statement Wednesday, Mitchell said Jones was combative. Mitchell says he got back in his truck to try to get away from an attacking police dog before Jones jumped on him and shot him.