PORTLAND (NEWS CENTER Maine) - On August 1, 2011, 41-year-old Allen McLean was shot and killed.

It happened outside of 4 Massachusetts Avenue in Portland.

Witnesses told the Portland Press Herald that McLean was running, flailing his arms, and yelling, "I'm dying, I'm dying."

RELATED ► Nearly half of Portland's murders from the last decade are unsolved

Police say any details from the public can help them solve murder cases. Do you know anything? If so, call (207) 874-8533 or submit an anonymous tip here.