Scotland Yard has been plunged into a racism crisis after revealing a total of 10 complaints have been referred to the police watchdog.

Deputy Commissioner Craig Mackey insisted "the Met does not tolerate racism" as he revealed another seven allegations had been reported after three officers were suspended over claims of offensive comments to colleagues.

It comes just days after the force vowed to get to the bottom of "very damaging" footage of one officer apparently racially abusing a man and another allegedly assaulting a teenage boy last summer.

Craig Mackey, Met Police Deputy Commissioner

The three suspended officers are based in Newham, east London

  • Alleged racist comments said have been made to other officers earlier this year

  • They were reported on 19 March

  • Claims are against an acting sergeant and two PCs

Mayor of London Boris Johnson, spoke to the Commissioner, and said the allegations were of "deep concern":

London is the most tolerant city in the world. There is no room for racism here and the Commissioner is right to take a zero-tolerance approach to any racism in the ranks of the Met as I do to any organisation in the Greater London Authority family. Mr Johnson added: "These allegations are therefore of deep concern and I have instructed my Deputy Mayor to liaise closely with the Commissioner and the IPCC to ensure they are investigated thoroughly. I note the actions of the Commissioner in moving swiftly on these allegations and I commend him for his proactivity. The Mayor's job, my job, is to bring all Londoners together, and that includes strengthening the critical relationship between the police and those who they protect.

Here are the details of the seven new claims to be referred to the police watchdog:

  • Bullying by a number of police officers and staff against PCSOs over an 18 month period in Wandsworth

  • Assault by five officers from the Territorial Support Group against several youngsters in Hyde Park in 2011

  • Complaint of racial abuse by an unidentified police officer whilst in Camden in January

  • Mishandling of calls with a "racial element" by a Pc working in the force's central communication command in 2010

  • Racist language by a Pc working in Westminster between May 2010 and August last year

  • Racist language in Islington by a Pc and a member of police staff, reported on March 26

  • Officer convicted on March 26 of racially aggravated public order offences that were investigated by British Transport Police - a mandatory referral to the IPCC