DALLAS — Dozens of demonstrators marched through the streets of downtown Dallas and briefly blocked the westbound lanes of Interstate 30 to protest a white police officer’s fatal shooting of a black man in his own apartment.

The march, which appeared to be peaceful, began with a rally outside Dallas police headquarters Friday evening. Demonstrators marched to the interstate, where they chanted “Shut it down!” before moving through downtown streets chanting slogans such as “Justice now!” along with the name of Botham Jean, the man shot to death in his apartment on Sept. 6.

No arrests have been reported.

Officer Amber Guyger is charged with manslaughter in the shooting and is free on bond. She has told investigators that she mistook Jean’s apartment for her own, which is one floor below Jean’s.