ATLANTA - Atlanta police now say speed was the key factor in the motorcycle crash that killed Mastodon co-founder William Brent Hinds last month.

ORIGINAL STORY: Mastodon co-founder Brent Hinds killed in Atlanta motorcycle crash

What they're saying:

Investigators concluded that Hinds was traveling between 63 and 68 mph on his Harley-Davidson when he collided with a BMW SUV driven by a 22-year-old woman at the intersection of Memorial Drive SE and Boulevard SE shortly before midnight on Aug. 20. The posted limit at the location is 35 mph, police said.

Hinds, 51, was taken to Grady Memorial Hospital, where he later died.

The backstory:

In their initial findings, police suggested the SUV driver may have failed to yield while making a left turn. However, video from the intersection

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