Great Falls, Va. ? Five people were found dead in apparent murder-suicide shootings Sunday at homes in two well-to-do suburbs of Washington, police said.

Officers found the bodies of three men and one woman in a house in Great Falls when they responded to reports of gunfire about 10:25 a.m., Fairfax County Police said.

An investigation at the first crime scene led officers to another house, where they found the body of a woman.

Police said they believe one of those found dead at the first house was responsible for all the shootings.

They treated the first shooting scene as a barricade situation until they determined that the gunman was dead after a man came out of the house.

Police said the same person appeared to have responsible for all the deaths, but gave no further details.

None of the people involved were identified immediately.