Patten claims that the acrimonious departure of Metropolitan Police assistant commissioner Tarique Ghaffur has hindered the project .
Metropolitan Police assistant commissioner Tarique Ghaffur was overseeing Olympic security before he sued the force claiming racial equality .
Patten claims that the acrimonious departure of Metropolitan Police assistant commissioner Tarique Ghaffur , who was overseeing Olympic security before he sued the force claiming racial equality , has hindered the project .