ST. LOUIS — Ferguson Police Chief Tom Jackson has issued a video apology to the family of Michael Brown, saying the 18-year-old’s body was left in the street for too long last month after he was fatally shot by an officer in the St. Louis suburb.

The video was released by a public relations agency Thursday, the same day Brown’s parents were in Washington with civil rights leaders. Messages left with Jackson and attorneys for Brown’s family were not immediately returned.

Brown was killed Aug. 9 during a confrontation with Officer Darren Wilson. Brown’s body remained in the street for more than four hours.

The incident sparked racial unrest and numerous protests, including some that turned violent. In the video, Jackson also apologized to any peaceful protesters who felt their rights were violated.