Story highlights Officials say traces of blood on the suspect's shoe matched one of the victims

Darron Dellon Dennis Wint has been charged with first-degree murder

(CNN) First, DNA on a pizza crust led authorities to the man they accuse of killing three members of a prominent Washington family and their housekeeper.

Now investigators say they have a new clue linking suspect Darron Dellon Dennis Wint to one of the victims: blood found on a shoe he was wearing when authorities arrested him.

Forensic analysis matched traces of blood on Wint's shoe to at least one of the murder victims, two law enforcement officials said. The officials would not specify which victim's blood was allegedly found on Wint's shoe.

It's too soon to say what role the evidence could play in the case authorities are building against Wint, who has been charged with first-degree murder in the killings last month of Savvas, Amy and Philip Savopoulos and housekeeper Veralicia Figueroa.

Investigators said last month they don't believe Wint acted alone . But so far, no one else has been charged in connection to the killings.

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