Photo by Brandon Anderson.

Four people are dead after a house fire in a wealthy Northwest D.C. neighborhood that authorities are calling suspicious.

According to the Metropolitan Police Department, D.C. Fire and Emergency Medical Services responded to a call of a house fire in the 3200 block of Woodland Drive NW just before 1:30 p.m. yesterday. While firefighters were extinguishing the fire, they discovered four people inside—three adults and a juvenile.

All four people—whose identities have not been confirmed—died. The Post reports that the house is owned by Savvas P. Savopoulos, “a 46-year-old corporate executive, and his wife, Amy, who is active in Washington’s society circles and fundraising events.” Police say the circumstances of the fire and the deaths are “suspicious” and asking for the public’s help in the investigation.

They’re asking anyone who saw a blue 2008 Porsche with the D.C. tags DK2418 in the neighborhood between 10:30 a.m. and 5:30 p.m. to contact police at (202) 727-9099 or send an anonymous tip to 50411. Authorities say they don’t know what caused the fire at this time and that there were no signs anyone had broken into the home.