Homicide

Police enforce state-imposed curfew in Ferguson, use tear gas to disperse defiant protesters

  • A law enforcement officer watches Sunday, Aug. 17, 2014, as tear gas is fired to disperse a crowd protesting the shooting of teenager Michael Brown last Saturday in Ferguson, Mo. Brown's shooting in the middle of a street following a suspected robbery of a box of cigars from a nearby market has sparked a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

    A law enforcement officer watches Sunday, Aug. 17, 2014, as tear gas is fired to disperse a crowd protesting the shooting of teenager Michael Brown last Saturday in Ferguson, Mo. Brown's shooting in the middle of a street following a suspected robbery of a box of cigars from a nearby market has sparked a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)  (The Associated Press)

  • Police in riot gear prepare to take up positions Saturday, Aug, 16, 2014, as people protest the police shooting death of Michael Brown a week ago in Ferguson, Mo. Despite heavy rainfall and lightning, hundreds of protesters gathered Saturday night at a busy thoroughfare that has been the site of previous clashes with police. Dozens of officers, a much more visible presence than the night before, stood watch — including some with shields. (AP Photo/Charlie Riedel)

    Police in riot gear prepare to take up positions Saturday, Aug, 16, 2014, as people protest the police shooting death of Michael Brown a week ago in Ferguson, Mo. Despite heavy rainfall and lightning, hundreds of protesters gathered Saturday night at a busy thoroughfare that has been the site of previous clashes with police. Dozens of officers, a much more visible presence than the night before, stood watch — including some with shields. (AP Photo/Charlie Riedel)  (The Associated Press)

  • A man wear buttons in support of Michael Brown Saturday, Aug. 16, 2014, as he visits the site where Brown was shot by a police officer a week ago in Ferguson, Mo. Brown's shooting in the middle of a street following a suspected robbery of a box of cigars from a nearby market has sparked a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)

    A man wear buttons in support of Michael Brown Saturday, Aug. 16, 2014, as he visits the site where Brown was shot by a police officer a week ago in Ferguson, Mo. Brown's shooting in the middle of a street following a suspected robbery of a box of cigars from a nearby market has sparked a week of protests, riots and looting in the St. Louis suburb. (AP Photo/Charlie Riedel)  (The Associated Press)

The first night of a state-imposed curfew in Ferguson, Missouri, ended with tear gas and arrests of some protesters, but it wasn't the curfew violation that precipitated the confrontation.

A team of officers from the Missouri State Highway Patrol, St. Louis city and county police moved armored vehicles down the street of the St. Louis suburb just after the midnight curfew Sunday.

Patrol Capt. Ron Johnson says police responded in force because some protesters positioned themselves on a restaurant roof and created a safety risk for approaching officers. A man with a handgun also created a concern.

A man was shot and critically wounded and police are seeking the shooter.

Saturday marked a week since a white Ferguson officer, Darren Wilson, shot and killed 18-year-old Michael Brown on Aug. 9.