New Jersey Man On FBI's 10 Most Wanted List Following Newark Murder Arrested In Maryland

PRINCE GEORGE'S COUNTY, Md. (CBSNewYork/CBS Baltimore) -- A fugitive wanted by the FBI in connection to a 2014 murder in New Jersey was arrested in Maryland on Thursday.

Family members of Olga DeJesus wiped away tears as officials with the FBI's Newark Field Office formally announced the arrest of Lamont Stephenson.

WATCH: Officials Discuss Stephenson's Arrest

Olga was strangled to death at her Newark apartment in October 2014. Her dog, Lola, was also killed. Kassandra DeJesus, who was in attendance on Thursday, made the grim discovery when she went to check on her mom.

Officials quickly turned their attention to Stephenson, then Olga's fiancee, who they say ditched his cell phone and was captured by surveillance video at Newark Penn Station skipping town.

For months on end he was on the lam and seemingly off the grid. After he was placed on the most wanted list last October, the FBI said he should be considered armed and dangerous with a propensity for sudden violence, especially against women.

Those warnings appeared justified -- police in Washington DC say Stephenson also killed his current girlfriend, homeless shelter worker Natina Kiah, and her cat on Wednesday.

Stephenson was arrested Thursday morning by Prince George's County patrol officers who were responding to reports of a suspicious man.

"They asked for his name and an address," PGCP Officer Henry Stawinski said. "He provided a name, but then also offered he may be wanted for additional crimes."

Back in New Jersey, the DeJesus family thanked police for their relentless pursuit.

"Everyone that played a role in helping bring Lamont to justice, I did this for my sister," Felix DeJesus Jr. said. "I know she's looking down right now, and can finally rest in peace."

Stephenson will be extradited back to New Jersey in the coming days.

Stick with CBS New York and CBS Baltimore for more on this developing story.