Darren Wilson quits. Here's his resignation letter in full

Darren Wilson, the officer who shot dead unarmed teenager Michael Brown, has resigned from his role with the Ferguson Police Department.

He had been on leave from the force since the shooting on 9 August but following the decision not to indict him by a grand jury last week, Wilson announced his resignation, saying he was leaving of his "own free will".

Here is his resignation letter:

I, Darren Wilson, hereby resign my commission as a police officer with the City of Ferguson effective immediately. I have been told that my continued employment may put the residents and police officers of the City of Ferguson at risk, which is a circumstance that I cannot allow. For obvious reasons, I wanted to wait until the grand jury made their decision before I officially made my decision to resign. It was my hope to continue in police work, but the safety of other police officers and the community is of paramount importance to me. It is my hope that my resignation will allow the community to heal. I would like to thank all of my supporters and fellow officers throughout this process.

More: What Darren Wilson has to say about shooting Mike Brown