Attorney General Eric Holder is promising a thorough investigation into the fatal police shooting of a black 18-year-old.

Holder travels to Ferguson, Missouri today to meet with authorities taking part in a federal investigation into the death of Michael Brown.

Meanwhile, Holder is calling for ``an end to the acts of violence in the streets.''

He says Ferguson's citizens should ``join with law enforcement in condemning the actions of looters, vandals and others seeking to inflame tensions.''