Who Is Daron Dylon Wint? History of Woodley Park Quadruple Murder Suspect

He is the only suspect who has been named in the brutal slayings of four people inside a Northwest D.C. mansion in May.

But who is Daron Dylon Wint?

Here's what we know:

Wint, 34, is charged with first-degree murder in the deaths of Savvas Savopoulos, his wife Amy, their 10-year-old son Philip and housekeeper Veralicia Figueroa.

Police say Wint held the four victims captive for roughly 18 hours on May 13 and 14. He is then suspected of being paid a $40,000 ransom, killing the family and Figueroa before setting the house on fire.

Police were able to tie Wint to the scene through DNA found on the crust of Domino's pizza delivered to the Savopoulos home the same night police believe the family was taken captive. 

It's not clear how Wint is connected to the Savopoulos family. Wint was born in Guyana; he is a permanent citizen of the U.S., though the charges against him are serious enough that he has hired an immigration lawyer, as well as a defense attorney, to represent him in court.

Police also have not said why Wint would want to kill the four victims. But, they said, from 2003 to 2005 Wint worked as a welder at American Iron Works, where victim Savvas Savopoulos served as CEO, sources said. One of Wint's relatives also was fired from the company.

An American Iron Works welder -- who said he lost a great friend in Savopoulos -- told News4 that Wint couldn't get along with any of his coworkers when he worked there.

• [NATL-NY] Exclusive Video Shows Marshals, NYPD Raid Home of Quadruple Murder Suspect's Girlfriend

Wint moved to the United States in 2000, when he was almost 20 years old, according to court records filed in Maryland. He joined the Marine Corps that same year and was discharged for medical reasons, the records show. 

Wint also has a legthy criminal history. In 2009, he was convicted of assaulting a girlfriend in Maryland. He pleaded guilty the next year to malicious destruction of property after he allegedly threatened to kill a woman and her infant daughter, breaking into her apartment, stealing a television and vandalizing her car.

• [NATL] Timeline in D.C. Mansion Killings Case

"The defendant advised he was good with a knife and could kill them easily and was not afraid of the police," a detective wrote.

Also in 2010, Wint was arrested while carrying a 2-foot-long machete and a BB pistol outside the American Iron Works headquarters, but weapons charges were dropped after he pleaded guilty to possessing an open container of alcohol.

Police have said Wint also goes by the name "Steffon." Court records also detail different spellings of his name.

At least one police record lists a home address that is less than a half-mile from where the Savopoulos family Porsche was found burning.

Wint also had four previous arrests from Oswego, New York, including assault, harassment and violating an order of protection, a source familiar with the investigation told NBC 4 New York.

Attorney Robin Ficker, who has represented Wint in the past, told News4 he doesn't believe Wint did it.

"He is a gentle guy. He was a student at Prince George's Community College. He wouldn't hurt a fly," Ficker said. "He's the kind of guy that you wouldn't mind your grandmother going to lunch with."

The Associated Press contributed to this report.