Officers from the Metropolitan Police were called at around 1.30pm on April 30 with reports of a colleague being injured while responding to an alleged vehicle theft.
At the scene, the injured officer was located before being taken to hospital with injuries to his spinal cord.
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His condition has now been confirmed as non-life threatening and non-life changing and he has been discharged.
At around 7.50pm on the day of the incident, police arrested a 41-year-old man in Erith on suspicion of attempted murder.
He remains in custody whilst enquiries continue.
