police shooting

A detective was shot while he sat in his patrol car Sunday. Police have arrested Otis Tyrone McKane, 31, who says he was angry about a custody case and "lashed out at someone who didn't deserve it."

In apparent ambushes, an officer in San Antonio has been killed and one in St. Louis has been injured. Meanwhile, officers in Sanibel, Fla., and Gladstone, Mo., were also shot on Sunday.

The Ramsey County attorney said the use of deadly force by Officer Jeronimo Yanez in July was not justified.

A pilot program could begin early next year. The announcement amplifies FBI Director James Comey's statement that the bureau is setting up a database that can track police killings.

Police took nearly an hour to respond to a 911 call from a woman who said her mentally ill brother was acting erratically. About a minute after officers arrived on Tuesday, one shot and killed him.

On Tuesday, an officer in El Cajon, Calif., shot and killed an unarmed black man. His sister had called the police to ask them to help her brother, who was acting erratically.

The scene plays out under bright sunlight, from a vantage point that's a short distance away from the confrontation between Keith Lamont Scott and Charlotte-Mecklenburg police officers.

The move by officials comes as demonstrators spend a third night protesting the killing of a black man by police, and as National Guard troops join city police in maintaining order.

After a fatal police shooting on Tuesday, the city has seen two days of peaceful demonstrations and violent protests. One man was shot at a protest Wednesday night and is on life support.

The tear-gas-shrouded demonstrations follow the fatal shooting of a black man by police on Tuesday. Police say the man was armed, while relatives and neighbors say he was holding a book.