A neighborhood dispute in Phoenix in the winter of 2015 ended in a fatal shooting. The argument escalated outside an apartment and, according to reports, 30-year-old Anthony Marks left the scene then returned with a firearm and shot 31-year-old Richard Danny Daniel Wren. Wren died on September 9, 2015.

The shooting happened directly in front of Wren’s seven-month pregnant girlfriend, who witnessed the attack. Marks fled after the shooting and has not been seen since; authorities have asked the public for help locating him.

Does anyone have information about Wren’s life in that neighborhood or saw activity around his apartment in late 2015 that could help investigators?