US Attorney General Eric Holder has promised a thorough civil rights probe into the fatal police shooting of an unarmed black teenager in Missouri.
The first African-American head of the Justice Department paid a visit to the troubled town of Ferguson on a mission to diffuse tensions.
Holder met with community leaders and the local police chief for a briefing on his department’s investigation into the August 9 killing of 18-year-old Michael Brown.
Although the night before Holder arrived nearly 50 protesters had been arrested, on Wednesday the street demonstrations appeared peaceful.
The turmoil in the St Louis suburb of 21,000 people has cast the area into the international spotlight as a symbol of often strained US race relations.