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A large group of around 30 placard waving protestors took over the building in Colmore Row early this afternoon. Video footage emerged on social media of activists sitting on the ground loudly chanting “What do we want? Justice" and "no justice, no peace". A spokesman for the CPS said that the crowd is in the lobby of the office building, which is shared with other companies, and are not affecting operations there.

Police officers are on the scene and have prevented the protestors - who earlier held a demonstration in the city centre - from moving further into the building, in the heart of Birmingham's high rise district. The demonstrators said they will only leave the building if West Midlands CPS sends a senior official to speak with them, but vowed to keep the place "clean and tidy" to "prevent false accusations of criminal damage" being levelled at them.

PA 'Black Lives Matter' protestors have taken over the CPS office in Birmingham

PA The protestors are highlighting the case of Kingsley Burrell

They are trying to raise awareness of the case of Kingsley Burrell, a black man who died after being restrained by police in 2011. Mr Burrell died of cardiac arrest following the contact with West Midlands Police officers who were attending a disturbance in Birmingham. An inquest held last year ruled that prolonged restraint and a failure to provide basic medical attention contributed to his death. Last month more than 100 people took part in a demonstration calling on prosecutors to reveal if charges will be brought against three officers implicated in his death. Speaking at the outdoor rally earlier today, Mr Burrell's sister, Kadisha Brown-Burrell, who has joined the office protest, said: "Today's protest - the CPS stated that before Kingsley's inquest there was insufficient evidence. "However, after Kingsley's inquest they decided that, after the IPCC report, they would revisit that decision. "We had a meeting with them this week, with CPS, and they stated nothing promising. "Hence the reason we're having the protest today." She added: "Since 1969, people have been dying in police custody and not one police officer has been convicted before. "And to highlight systematic failures to do with the criminal justice system here in the UK."

PA Mr Burrell died after being restrained by police