Scores of armed police stormed a favela in the Brazilian city Sao Paulo as part of an ongoing war with a major crime gang.
Officers carried out a number of arrests during a security operation in the Brasilandia favela targeting the notorious Primeiro Comando da Capital - the First Capital Command group.
Around 90 police have been killed over the past year, which has seen them engaged in a tit-for-tat battle with members of the gang.
The violence appears to have been triggered by a drug raid in the city months ago.
But security officials say it has spiralled out of control due to campaign politics and alleged police brutality.
The First Capital Command group was founded in 1993, in a prison in the state of Sao Paulo.
It is thought to have been behind a number of uprisings in jails and a series of attacks on public buildings, many of which are said to have been organised using mobile phones.
The gang has also been linked with drugs and arms trafficking, kidnappings, bank robberies, and prison breaks.