Alpo Martinez was gunned down last week in his hometown of Harlem.
The drug-dealer-turned-snitch was freed into witness protection in 2015, after serving 25 years for killing 14 people.
The Sun Journal, a Maine newspaper, has detailed Alpo's life in witness protection, which was spent mostly in Lewiston, Maine.
Alpo worked multiple jobs, including as a Pepsi fulfillment center employee and most recently as a construction worker. His neighbors say he had a Harley Davidson, a luxury sedan, and the Dodge Ram he was ultimately killed.
Alpo appeared to be dating multiple women at once and made frequent trips to New York City. Alpo had left Lewiston earlier this year but had returned a few weeks ago with U-Haul to get his belongs.
Alpo may have supplementary his income with drug dealing. There are reports that Alpo was seen throwing baggies out of Ram after he was shot in Harlem on Halloween.