MEMPHIS, Tennessee -- Four adults and two children were found shot dead inside a Memphis home late Monday, and three other children were rushed from the scene in critical condition, authorities said.

The injured children were 10 months, four years, and seven years old, they said.

Police had not yet released any additional information about the victims or potential motives or suspects. The investigation was expected to continue through the night.

"They've confirmed that we do have D.O.A.s [fatalities] on the scene," said Memphis Police Lieutenant Ray Douglas. "Other than that, we don't know a whole lot right now."

A relative who knocked on the door of the house at around 6 pm and got no reply alerted police, according to the Commercial Appeal, a Memphis newspaper.