The headlock was briefly used (approximately 8 seconds) to help take him to the ground.
He never lost consciousness during the time he was in a headlock.
He was breathing (speaking) during and for several seconds after the brief headlock.
He later died due to a number of preexisting health issues, exasperated by strenuous activity.
No indictment.
If he took off running down the street, chased by the cops, he would likely have died in the same manner - preexisting health issues.
Interesting article related to choke holds:
http://judoinfo.com/chokes6.htm