We know D.C. Get our free newsletter to stay in the know.

This afternoon in the backyard of 622 Ingraham Street NW, police found evidence relating to the murder of Michael and Virginia Spevak . The house is less than twenty yards from the spot where the Spevaks’ blue 2005 Scion was torched in the early hours of Sunday morning.

Officers have brought in four of the house’s residents for questioning and are preparing to execute a search warrant on 622.

Inspector (soon to be Commander) Rodney Parks, head of the homicide unit, wouldn’t release too many details to the press, but said that a patrol car showed up responding to a tip, and that detectives and crime scene units arrived shortly thereafter. Cops spent several hours combing the yard, the porch, and a dump truck parked behind the house for clues.

“I can say that there is an obvious forensic link indicating that the items are associated with the car,” Parks said. “It’s too early to tell how the items relate to the vehicle.”

Among the items police packaged in orange evidence bags were two folding chairs. Parks wouldn’t comment on how the chairs related to the investigation.

Police led the four interviewees away from the scene—two in a marked cruiser, two in an unmarked sedan. Nobody was in handcuffs, and Parks would not release the interviewees’ names.

“You may have damaged their willingness to talk to us,” Parks chided camera crews who had rushed to film the departure. “We did not want to expose them as any connection to the case.”

Neighbors say that 622 Ingraham is known to pack a crowd, with a number of teens and twenty-somethings in and out of residence there. Police said there was no indication of an association between the Spevaks and the residents of 622.

As for motive, Parks said that several missing items from the Spevaks’ house suggested burglary—”But we haven’t ruled out anything else.”

Still no word as to whether Dr. Spevaks’ psychiatric work with troubled teens, or Mrs. Spevaks’ foster work, had anything to do with the brutal murders.

ADDENDUM: MPD is really trumpeting this, so what the hell:

The Metropolitan Police Department is currently offering a reward of up to $50,000 to anyone that provides information which leads to the arrest and conviction of the person or persons wanted for these homicides committed in the District of Columbia.

Anyone with information is asked to contact Detective Anthony Greene on (202) 645-5452 or (202) 607-8268 (cell), or contact police at (202) 727-9099 or 1-888-919-CRIM [E].